Linux run command as another user without password. com/hzgzylxxl/bmw-error-4827b3-fix.
Jul 11, 2020 · This article is a brief overview of what Sudo nopasswd is and how to run commands on Linux as a sudo user without having to enter your password every time. : Dec 8, 2013 · I have add user= ranjith on /etc/sudoers file like, ranjith ALL=(ALL) NOPASSWD: ALL Now we can use, "sudo, sudoedit - execute a command as another user" [ranjith@ranjith ~]$ sudo -i # id uid=0(root) gid=0(root) groups=0(root) Its working for me and Now i can login to root from my local user "ranjith" directly. # vim /etc/pam. Users that want to use the sudo command need to have an entry in the /etc/sudoers file found in the system directory. Options. Run a GUI application as another user: If you want to run a GUI application as another user, you need first allow to the target user connecting to your display: xhost +si:localuser:user then use runuser/su/sudo/pkexec to run the application, and then use xhost to prevent the subsequent connections: xhost -si But you can also use sudo to either switch to another user, or run only one command as if it was run by this user. That is what the sudo command is designed for. Some of the commands are manually typed, others are shell scripts that I execute. And from the script, I want to run some commands as usr2. Note that errors in /etc/sudoers can make a system unusable. To allow user Alice to execute a single specific sudo command without entering a password, you need to use the following line to the sudoers file. sudo command Jan 5, 2024 · 1. Nov 24, 2020 · By definition, if you type a command name in the terminal, you are running that command as your current user ID (unless the command elevates privileges by itself, eg. You can pass your command with -c parameter. su is also used to test commands with different user permissions to ensure the system requires authentication for user switches. How to execute ALL sudo commands without password on CentOS. For example, type the following command to remove the user password of a user called “james“: sudo passwd -d james Jan 14, 2012 · I have a script that runs with root privileges, and I have a command that must not be run with the those privileges that is executed by the script. Mar 18, 2024 · In Linux, we can run a command as a superuser by prefixing the command with sudo. So a user who is not allowed to administer the system is not allowed to run May 9, 2021 · The sudo command in Linux allows users to run certain commands as another user, preferably as root. Sudo (superuser do) command in Linux lets a user run a command as the root by entering your password . In contrast, the sudo command enables users to run certain commands with increased privileges without logging in as the root user. Jul 18, 2012 · Doing just this, won't get subsequent commands get run by <otheruser>, it will spawn a new shell. sudo -u user2 ls or. Oct 2, 2012 · and then use user su4098 as the root, with su4098 I can use tcpdump since I want to run the tcpdump command in a script, I dont want to input the password mannualy how can I run tcpdump command with su4098 without mannually input the password？ or specifically how can I change my username to su4098 without mannually inputing the password? thanks! Aug 26, 2020 · There are three ways to do it: Put appService. When using the sudo -s command, the target user inherits the environment of the previous user. ) Oct 26, 2011 · On a terminal type sudo visudo and add a line like this at the end of the file specifying the commands you want to run without typing the sudo password (I suggest you use each command you want to use in your terminal and not just allow all programs to be executed this way) <yourusername> ALL=NOPASSWD: <command1>, <command2> Aug 9, 2014 · Just in case it's not obvious, you must replace the user at the beginning of the sudoers entry with the username of the actual person who you want to be able to run the command, or a %group to allow all users in that group (for example, %sudo will allow anyone in the sudo group to execute the command w/o a password) – When you run commands with sudo, you put in your password, not the password of the user under whose identity you wish the command to run. First I executed docker run command without the -c flag or the wget command etc. 4. (If running ssh [email protected] from within a script, it may work to run exec ssh [email protected]. List the Microsoft Store apps on your computer using PowerShell: Get-AppxPackage|select Name. This is a quick way to disable a password for an account. Specifically systemctl restart unicorn_my_app. To specify a gid instead of a group name, use #gid. Apr 24, 2024 · In Linux, the su (switch user) command enables users to log in as another user, often the root user, and access their files and settings. Using sudo instead of login in as root is more secure because you can grant limited administrative privileges to individual users without them Mar 27, 2013 · I believe you are running the script as the user who invoked it, not as the sudo user. This command is useful in various scenarios where you need to execute a command or start a shell session as another user. Dec 30, 2020 · I'm downvoting this question because it states "on the remote machine I can run sudo commands without needing to input a password" and then the accepted answer is exactly "how to run a sudo command without a password". To make a user account passwordless, use the -d (--delete) option with the passwd command. If you want to run another command from within the script as this other user, you should use something like: sudo -u <otheruser> <command> And in sudoers file: <yourusername> ALL = (<otheruser>) NOPASSWD: <command> Obviously, a more generic line like: Apr 30, 2020 · my user is not root in the machine. su is primarily for switching users, while sudo is for executing commands as other users. Right Click on it, select Misc > Run as this user, you then type the binary path you want to run as that user, for example cmd. 1). Dec 27, 2023 · As a Linux system administrator, you may encounter situations where you need to allow a user to execute commands with elevated privileges without entering a password each time. Jan 14, 2023 · One solution would be to use the sudo -n option, which allows you to run a command with elevated privileges without being prompted for a password. SSH login without password. Before this works, the system administrator has to set up the /etc/sudoers file. Password: Jul 11, 2022 · With sudo, you can run commands as any other user, not just as root. May 13, 2013 · I would like to run a script from the main ubuntu shell as a different user that has no password. Feb 22, 2013 · Note: The above will ask the password for the user account on the remote host, and copy the public key automatically to the appropriate location. 1 Jul 19, 2024 · Understanding the `passwd` Command. To change users, we will have to use this command (followed by the user's password): $ su secondUser Password: After entering the correct password, you will be logged in as the specified user (which you can check by rerunning whoami. Therefore, if you can execute any command with a password prompt, and you want to be able to execute a particular command without a password prompt, you need the exception last. ) Run the following in a terminal: sudo passwd <username> Run a command as another user using sudo -s Instead of using the su command for switching to a different user and then running com-mands, you can use the sudo -s command. Therefore Aug 4, 2023 · 58. su - myuser # wait for login aliased_cmd Mar 16, 2019 · This is a common problem in *nix when a user needs to run a particular command that would normally require root permissions but we don't want to give that user root permissions in general. So you can use the command sudo -n -i -u user2 /usr/local/bin/script. You can use any character except ' itself inside the single quotes. Method 1: Using the “runuser” command; Method 2: Switching to another user; Method 3: Using the “pkexec” command; Method 1 Apr 11, 2022 · LinuxToday is a trusted, contributor-driven news resource supporting all types of Linux users. Ironically, you need root privileges to do so. Our thriving international community engages with us through social media and frequent content contributions aimed at solving problems ranging from personal computing to enterprise-level IT operations. This behavior is well-suited for scripting, and later in the article, we'll look at using it with sudo to give access to specific commands to unprivileged users. The man page synopsis for passwd is as below: passwd [options] [LOGIN] Running the passwd command without any argument will ask for a change of password for the user logged in. runuser is a command-line utility in Linux that allows users to run commands or shell scripts as a specific user and group without prompting for a password. In order to execute commands as such “system” users who don't log in normally, you need to hop via the root account: Mar 1, 2024 · As has been written elsewhere, the sudo command allows a suitably authorised user to execute a command as someone else. The -g (group) option causes sudo to run the command with the primary group set to group instead. This means: whenever user-a executes sudo -u user-b, let him go without asking for the password. but then it prompts me with . I know I can disable the password with passwd -d testuser and leave the shell to /bin/bash this way would secure a little bit but I need to have nologin/false shell. It is an interesting command that allows executing commands with another user’s privileges (By default, the root user). I have full sudo privileges, so I tried this: sudo su -c "Your command right here" -s /bin/sh otheruser Mar 16, 2024 · The “run as different user” option is missing from the context menu of Universal Windows Platform (UWP, Microsoft Store ) apps. I am currently logged in as root user. Now, the below example will run “ls” command as user rahul Oct 27, 2010 · This command prints the current user. 1. Here is the permission of the wall script. Only wall can read and execute it. " For example, to run a command as the user "john," you would use the following syntax: "su john -c 'command'" Get full access to Linux Security Cookbook and 60K+ other titles, with a free 10-day trial of O'Reilly. It's complicated by the fact that current directories and environment variables don't get inherited by the elevated child. The procedure is as follows: Open the Linux terminal application. The following example assumes that you are logged in as a user with sudo privileges. d/su Aug 11, 2023 · I want to be able to allow users to run a specific command as another user, is this possible? Yes. Use ssh to run commands (such as backup scripts) on your remote servers without using a password. Unix has a general solution for this: the setuid bit. This works perfectly fine as root. when I run. For example if you have sshd then do: $ ssh [email protected] With telnet you'd run: $ telnet -l root 127. It may be a good idea to leave /root untouched and create (or use) a different directory for this purpose (e. bash_profile. sh /tmp/test" - postgres Breaking it down: /bin/su : switch user -c "/path/to" : command to run - : option to su, make it a login session (source profile for the user) postgres : user to become Once you run passwd for this account, it will change the user's password and allow the user to be able to login. However when I run. Its primary purpose is to change user passwords, but it offers additional functionalities such as updating password aging policies, unlocking accounts, and more. Is this at all possible? Dec 10, 2020 · The sudo command allows you to run programs as another user, by default the root user. smith whoami" without the double quotes, it will tell me I am john. Here's how to actually run a process as another user, and how to run commands To anyone having problems connecting to another user of the remote server, you might need to add that user to the ssh-users group: sudo usermod -a -G ssh-users <remote-user-name> Share Jan 19, 2015 · -u user The -u (user) option causes sudo to run the specified command as a user other than root. To specify the user to run a command as we can provide a name after the -u flag. Super. To open this file, run the following command: $ sudo visudo. $ apt-get update $ apt-get upgrade $ shutdown -h now Aug 30, 2012 · Running sudo su user01 in a script does not mean the following commands are sent to the resultant shell. The following information was obtained from here. In particular, we’ll see how we can do that without logging in as the target Nov 19, 2019 · Change Another User’s Password # As we mentioned in the introduction, only the root user and users with sudo access can change the password of another user account. g. Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Feb 6, 2018 · See if you have any remote login services running (in. /usr/local/bin). To set up a passwordless SSH connection for the root user you need to have root access on the server. sudo stands for “Super User Do. Learn how to use the passwd command. If you need multiple users to run this script, use a %groupname instead of the username1 Share Jan 24, 2023 · There are several ways to run a script or command as another user in Linux. I have tried to use. by being setuid root, or using sudo internally as in Tony's solution). It allows a permitted user to execute a command as the superuser or another user, as specified in the /etc/sudoers (config file that defines or list of who can run what) file. Quit the editor, and from the terminal, make the script executable and change its ownership to root, otherwise another user with access to your system could possibly edit it and execute whatever commands they want as root without needing your password: So I created an user called transfer on server A and server B. Use scp to copy files to and from your remote servers without a password. But, how can I run this without having to type the password. So what you should be able to do is the following to have a user without a password, simply create an account then delete the password. Oct 3, 2017 · I'm currently using private/public key mechanism to remote execute commands on the server. So, I couldn't find a secure way of doing this, so I ended up using the SETENV: option in the sudoers entry and then before I issue commands as user1, I source user2's . 0. Feb 3, 2014 · su is mostly designed for unprivileged users, the recommended solution for privileged users (e. alice ALL=(ALL) NOPASSWD: /bin/systemctl start mariadb Run Specific Sudo Commands Without Password. Once the container was running I entered this container as a root user using this command : May 26, 2017 · Where username2 is the user you want to run the SVN command as and username1 is the user running the script. Alert! The price of convenience is security. Super lets you run commands as another user, including root. May 22, 2014 · Run a shell inside sudo: sudo bash -c 'whoami; whoami'. com Aug 13, 2019 · The sudo command allows trusted users to run programs as another user, by default the root user. You can run a UWP app as a different user from the command prompt using runas. Nov 28, 2023 · This way, end of a script will be executed by different user (root). Running sudo su - and then typing the user password has the same effect the same as running su - and typing the root password. - "Run as administrator" - changing your execution level on your local machine - "Run as different user" - selects what user credentials you run the process under. The ‘su’ is an abbreviate for substitute or switch user. To switch to another user, the syntax is: sudo -i -u <USER> You can also run a command as another user without switching, like this: sudo -i -u <USER> <CMD> The “whoami” command shows the current user. (which is what sudo is for). execute permission for the file. The utility requires root privileges to run and can be used to execute commands with the security context of a specified user and group. These are required to make the end of the script to execute just once and to preserve the exit code of the sudo call. The script must not be run as root. This tutorial explains how to configure the sudoers file and allow certain users to run sudo commands without being asked for the password. Unlike the sudo command, which executes a single command as another user, the su command switches the entire user environment to that of the target user. The user must have. Sep 29, 2015 · Linux Run Command As Another User. sh and then return back to my initial root account. If you’re ready, let’s begin. Feb 2, 2015 · On Server2 I have the user named user2. However, for completeness and as user Bib points out, you could execute; su - _user_ foo which would allow you to run as root for another user. Jan 27, 2022 · It's clear to me that sudo is your intended use here, as you are trying to execute a single command with temporary privilege elevation. d/myOverrides with this directive: <user> ALL= NOPASSWD:/bin/su Dec 30, 2015 · How to run script as another user without password? 1. This blog will explore different approaches to run the Linux commands as another user. I understand that the way to do it is: su -l <usr2> -c "command" The issue is with passing the password. If ssh-copy-id doesn’t work for you, use the method we discussed earlier to setup ssh password less login. I am not able to create user2@Server1 user by the way. By default, this someone else is root but (subject to authorisation) it can be any user. To run a command as root: $ sudo <command> To run a command with the security privileges of another user: $ sudo -u <username> <command> To May 16, 2024 · Explains how to run Linux commands as another user or as the root user on Linux using the command-line (CLI) and GUI methods. Dec 10, 2020 · The sudo command allows you to run programs as another user, by default the root user. To specify a uid instead of a user name, use #uid. … To display a list of commands, enter the following: su –h. You can edit the "User privilege specification" section of /etc/sudoers, adding: non-root-user ALL = (appuser) NOPASSWD: ALL This will allow non-root-user to run all commands as appuser. Jun 22, 2019 · Solution: After several different approaches I got it working with the following configuration: The variables in the inventory: ansible_connection: ssh ansible_user: myuser ansible_ssh_pass: 1234 ansible_become: yes ansible_become_user: root ansible_become_pass: 1234 Feb 2, 2018 · To run a command as another user using sudo configured to allow you to access the other account use . Sep 21, 2006 · Linux Set User Password Command. smith. Easiest method is to temporarily allow root to log in over ssh via password. Share. I need to be able to write a script that runs on Server1, which will scp some files to user2@Server2. I was able to find the following post and this worked. To get a shell using another user using their password use . In Linux, you can allow specific commands to be executed without entering the sudo password by configuring the sudoers file appropriately. Due to this, the only root user Oct 3, 2020 · To allow users in a specific group to switch to another user account without a password, we can modify the default PAM settings for the su command in the /etc/pam. From what I've been able to determine, I can run a command as another user using tools like sudo. However, it also carries potential security risks. service systemctl --user stop appService. d/su file. 6K. As it has no NOPASSWD: flag, password will be asked. 3. If I simply type. As such, I tried adding it to my sudoers file so I can run it without a script. This script can go interactive, and ask the user for the password. sudo -u USERNAME whoami # outputs USERNAME's user name or start a subshell and run your commands in it, e. Perform rsync over ssh without password bash user. Apr 17, 2022 · How to Remove User Password in Linux. Nov 20, 2017 · If you start your script with root permissions but need to run certain commands as a specific non-root user you can use sudo with the -u option to either run a single command with e. Jun 6, 2012 · Every time I issue a sudo command; the system asks for the user password (which is good in its own way). However, if you are the only person using the system and require to run commands as the Nov 2, 2010 · I'd like to allow one of my users to execute commands as another user on my Ubuntu Lucid server. Jun 10, 2022 · Therefore, it will not prompt for a password. May 23, 2024 · After login, I need to run some commands as root user. The sudo -s command also offers a few privilege control measures. The sudo command allows users to do tasks on a Linux system as another user. If you want a interactive shell use -s instead which will not call the user's login shell. Is there another way to run the command as another user? Jan 2, 2023 · The `sudo` command allows you to run commands as a different user without having to switch users. sudo chsh -s /bin/bash userB I would run the script as root and this should run as another user. onetime on the remote machine, and then run a regular ssh command, this time not passing any command to be run on the remote machine. Nov 29, 2020 · The sudo program allows a user to start a program with the credentials of another user. Run a command as another user with a clean environment using sudo -i. There are also live events, courses curated by job role, and more. The explicit question is "How do I get around this [a terminal is required] error?" and the accepted answer has nothing to do Jun 15, 2022 · Add the following line to disable the sudo password for a specific user. d/script start'. In this tutorial, we’ll learn different ways of running scripts or commands as another user in Linux. Instead of using set-uid/gid you can use configure sudo to allow a specific user to run het helperapp as USER1 without a password prompt (this requires admin/root priviliges): So if you're running non-elevated copy of cmd and want it to run another ordinary command but have it run elevated, you need an interlude command that can run it for you but is marked for elevation. service Apr 14, 2024 · Use ssh to login to your remote servers without using a password. Say I'm connecting to the box with a user called 'ludo', and I want ludo to be able to execute commands as the 'django' user. We can then add the line below to the file: userX ALL=(ALL) NOPASSWD:ALL. Is there any way to do this without prompting for a password? I can put the password in a config file or something if necessary. The sudoers file determines which users can run certain commands with administrative privileges (using sudo) and whether they need to provide a password for those commands. ” By prefixing any command with sudo, the system executes the command with administrative rights. According to Sudo usage stats, over 90% of surveyed Linux servers used sudo for privilege escalation. To change the password of another user account, run the passwd command, followed by the username. User ‘rd’ […] Apr 10, 2024 · The sudo command, short for “superuser do,” is a powerful utility in Unix-like operating systems that allows a permitted user to execute a command as the superuser or another user, as specified by the security policy. I allowed transfer to be able to ssh into server B without needing password using authentication keys. If the user is granted with sudo assess, the su command is invoked as root. sh >>>root From another script I would like to be able to temporarily switch between users without entering a password, storing the password in the script or a file, or modifying /etc/sudoers and execute user. -g group' Normally, sudo runs a command with the primary group set to the one specified by the password database for the user the command is being run as (by default, root). sh to run the script as user2 with their environment variables set, without being prompted for a password. Dec 28, 2023 · Switching to a Different User without Entering a Password. To run a command as a Aug 10, 2020 · Learn how to run some or all sudo commands without entering the password on Ubuntu or any other Linux distribution. $ sudo adduser test $ sudo passwd -d test Removing password for user test. I want the default user, ubuntu to be able to run a specific service without being prompted for a password. You can find a specific app: Jan 11, 2019 · If user myself is a member of the sudo group, all commands issued by that user will always match the %sudo ALL=(ALL:ALL) ALL line. su -c "yourcommand" otheruser sudo will cache the password, su will not. The screenshot below shows the usage of sudo. One way is to use the "su" command, which stands for "switch user. This can be useful to delegate administrative tasks to another user (without giving the root password). For example, you could create a group scriptUsers and a user scriptRun. Running commands as different user from bash script. su - username # Output: # [No password prompt, immediately switched to the 'username'] Jun 2, 2009 · In my situation I needed to allow multiple users to su to a specific user. The fix is to arrange the /etc/sudoers configuration lines in the order of increasing specificity: Oct 2, 2012 · This script should first save the quoted command (without quotes) in file named (e. The scenario you are experiencing is caused by the users cached credentials for sudo, which allow sudo to maintain a session and any further sudo command will not prompt for passwords. Then you can control it with: systemctl --user start appService. The command I want to execute is actually an alias in the non-root user's . Create a group using addgroup <groupName> that other users will be able to su to without a password. You can use ‘su’ to execute a single command as another user without switching to their environment: sudo su -c "command" -s /bin/bash username Replace ‘command’ with the desired command and ‘username’ with the target user. For example, using "root", I need to sudo to another user and do something like "cd /tmp/; ls -ltr". Follow answered May 26, 2017 at 3:53. However, Linux distributions also support a feature to run a command as another user without logging out of the current user. Notice that we haven’t used the vim or nano editors. execute permission for the whole directory path (here /root only). Overview. I'm struggling with finding the syntax for the sudoers file to do this. How do I run or execute sudo command without a password for a user named Tom under Debian/Ubuntu/CentOS Linux cloud server? sudo (“superuser do”) is nothing but a tool for Linux or Unix-like systems to run commands/programs as another user I'm writing an init script which is supposed to execute a single command as a user different than root. The sudo command prepends the specified command, executing it as the target user after authentication: I want to be able to 'su' to a specific user, allowing me to run any command without a password being entered. sudo su - user2 < file_contains_commandLines I can run the commands in the file "file_contains_commandLines" as the user user2 - also without typing my password. There are 2 security context nuances here, and we need them to overlap. Running a graphical command as root. eg: sudo -u django The following percent (‘%’) escape sequences are supported by the sudoers policy: %H expanded to the host name including the domain name (only if the machine's host name is fully qualified or the fqdn option is set in sudoers(5)) %h expanded to the local host name without the domain name %p expanded to the name of the user whose password is Dec 4, 2021 · A sudo in Linux allows to execute commands with the security privileges of another user, by default the root user. Mar 5, 2019 · I solved the issue by using a simple chmod 777 command. . See full list on baeldung. If you want to run the echo hello command as the dp-postgres user, you Mar 23, 2012 · Part 1 : SSH key without a password. Jun 4, 2023 · On my system, there are 2 users: david and wall. Question: How can remote execute as user 'admin' without supplying the password? Mar 25, 2024 · Running a command as another user. Another way. May 26, 2017 · now, SOMEUSER will be able to run sudo commands without a password. Apr 16, 2018 · I'm trying to run a script that automatically adjusts my screen backlight, which requires it to run elevated. The command must have been allowed by the system administrator. However, when I am myself or any other user, it is Try running: sudo -u userB ls If this works then it is all working as you have configured it to. service in ~/. If you want a full login shell you must change the user's shell with. When running commands as a uid, many shells require that the '#' be escaped with a backslash ('\'). Jul 24, 2023 · Run Sudo Commands Without Password Run Particular Sudo Commands Without Password. linuxconfig ALL=(ALL) NOPASSWD: ALL Disabling the sudo password for a single user (recommended option) Another option is to disable the sudo password for all users that belong to a certain group. Jan 1, 2021 · As with all Linux commands, there is a synopsis, which details how the command is used. A shell run by the sudo -s command inherits the environment of the current user. This can be achieved by running the ‘su’ command as the root user. So now from Server A i'm trying to su as transfer, ssh into Server B and run the command. Sep 15, 2022 · Here’s how to switch a user to another user account through the ‘su’ command. non-root-user will not be allowed to run commands as root. In order to run command as <dummy user> without being prompt for the password and have the right environment, you should create a simple file: sudo visudo -f /etc/sudoers. Having sudo access allows regular users to perform tasks that otherwise require elevated permissions. The passwd command in Linux is a powerful tool that allows system administrators and users to manage password-related tasks. If you really want to have a single quote in that command, use '\'' (which technically is: end single-quote literal, literal ' character, start single-quoted literal; but effectively this is a way to inject a single quote in a single-quoted literal string). (Remember, the original one cannot run with admin privileges without a password using this method. As I warned, you must be careful while testing this method on a production system. service. Although many novice Linux sysadmins only know and use sudo to run commands / elevate or escalate privileges to root and full administrator rights, and many examples only grant unrestricted and unlimited privileges sudo is explicitly designed to In Linux, the su command (switch user) is used to run a command as a different user. This is how I'm doing it currently: sudo -u username command. I want to execute something like this: su user2 -C script. Apr 16, 2024 · The su command in Linux lets you switch to another user's account or execute commands as a different user. If you spend a lot of time on the command line, sudo is one of the commands that you will use quite frequently. Step 1: Generate a public and private key pair Nov 5, 2023 · The `runuser` command allows a user with root privileges to run commands as a different user and group without asking for a password. Run script as another user on Linux. Rob Cha Run script as another user on Linux. Currently the server still asks for password when a command has uses sudo. read permission for the file. If I do: "sudo -i -u john. For example: If my login were user1 and the user I want to 'su' to is user2: I would use the command: su - user2. I want to allow david to run wall's script, with password prompt, to allow david to type wall's password, but without root privilege. The program sudo can be configured to allow a group of users to sudo a particular command as a particular user. bashrc and provide the -E option when invoking sudo. Running: ~# su -c "/bin/touch /tmp/test" testuser would work, but I need a valid shell for the testuser. It's useful for administrative tasks that require elevated privileges. The -u flag lets you specify which user to execute the command as: sudo -u hudson command Jul 27, 2024 · I have installed Oracle VirtualBox on a Linux server, where I will use a Virtual Machine with RHEL/CentOS 7/8 to verify the steps from this article. Also, by default sudo will ask for the current user's password. The file should only be edited with: All of these answers unfortunately miss the point. -i [command] The -i (simulate initial login) option runs the shell specified in the passwd(5) entry of the target user as a login shell. sudo is there to clearly distinguish command being run as non-root from command being run as root. local). config/systemd/system/ and remove the User= line. telnetd, rlogind, sshd) and then run the appropriate login command to the localhost (127. I need a way to run that command without those privileges. Type the following command as root user: # visudo Or $ sudo visudo Append the following entry to run ALL command without a password for a user named marlena: Sep 30, 2009 · Obviously, root can run any program as any user, and any user can su to another user with a password. Jun 6, 2024 · The sudo command temporarily elevates privileges, allowing users to complete sensitive tasks without logging in as the root user. In addition to switching users, the su command allows you to run a single command as another user without fully switching to their environment. sudo -u otheruser yourcommand and your password. Most Linux distributions like Ubuntu, Debian, Fedora use the sudo mechanism to allow admin users to run commands with root privileges. These are 2 different users with different privileges, so, skipping the password for usr2 is not an option. Jan 19, 2024 · How to Execute a Command as Another User by Using su Command. d/su OR $ sudo vim /etc/pam. Then, configure sudo to let any user in scriptUsers become Dec 8, 2016 · I need to run two or more commands as another user in Linux. But our aim is to run Linux command as another user without switching to them. Please note the $[LINENO+2] and exit $? calls. sh. 1 And with rlogin you'd run: $ rlogin -l root 127. Feb 14, 2015 · If there are multiple matching entries in /etc/sudoers, sudo uses the last one. But launching a program or script owned by another user isn't the same as running that process as that other user. This passwordless sudo access can save time in automated scripts or configuring services to restart without manual intervention. In this example, we are disabling the password promot for user linuxconfig. sudo docker run --pid=host -dit --restart unless-stopped --privileged -v /home/:/home/ --net=host ubuntu:latest bash. sudo su - user2 -c "ls" Jan 2, 2024 · The above command which you to another user, where you can run commands with that user. when I run : sudo su - user2 I switch to the user2 without password prompt. I am the only sysadmin using my server. 0. Type following passwd command command to change your own password: $ passwd Sample Outputs: When you use the sudo -s approach for running a command as a different user, the command is logged in your history. Within the script it will have some commands that will submit a job (a shell script for example) as another user without password prompt. In this tutorial, learn how to use the sudo command in Linux with examples. In fact, it likely means a new shell is spawned as user01, which never exits! Two things: You can execute a command as another user either by passing the -c 'command' argument to su, like su user01 -c '/etc/init. , scripts executed by root) is to use non-set-user-ID command runuser that does not require authentication and provides separate PAM configuration. For example, if you wanted to run the command “ls” as the user “jane”, you would use the command: The passwd command in Linux allows you to change user password, lock accounts, expire passwords and more. Here is an explanation of some of the options for the passwd command: Jul 3, 2012 · On one particular machine I often need to run sudo commands every now and then. This is because it’s insecure to use these editors. Another solution would Dec 21, 2023 · The su (Substitute User) command allows you to switch to another user’s account in the current session. David know the password of wall. CMD would then open as that user without prompting for that user's password. One advanced use of the ‘su’ command is switching to a different user without having to enter a password. The Nov 22, 2022 · To give the user a password again after running this procedure, you can't use a GUI (bug #882255), you have to use the command-line: Log in as another user with admin priveleges. We also learned how to disable sudo password prompt for certain users when running specific command(s) by modifying sudoers file. Have followed the instructions here to add user ubuntu to a newly created group, LimitedAdmins, which is confirmed with: $ getent group LimitedAdmins LimitedAdmins:x:1001:ubuntu Jul 3, 2019 · I have a shell script that I need to run as another user, but, it can only be executed by the current user in my app. Here is an except from the sudo man pages. Only administrators may run arbitrary commands as root with sudo (unless you reconfigure sudo to allow others to do so, of course). Your aim: You want to use Linux and OpenSSH to automize your tasks. I am fine with entering password on sudo in most of the cases. Apr 26, 2016 · Run the tool as a local admin, and find a process that is running as the user you wish to impersonate. ) . It is commonly used to perform administrative tasks without logging in as the root user, thus providing an audit trail and Mar 5, 2024 · Run /usr/sbin/rebootcommand without password on CentOS: marlena ALL = NOPASSWD: /usr/bin/reboot; Save and exit the file. how to run script as another user without password However, there was one side affect. exe. Learn how to use the passwd command with practical examples. Here’s a simple example of the su command: I'm trying to achieve same result as the answer from that existing SF question without having to enter the password for the original user, that is, I'm userA, and I want to be able to run a command as userB without having to enter the passwords for any of these users. This short note shows how to run commands as another user using sudo. Say the current user is user1 and the other user is user2. try running: su -c "Your command right here" -s /bin/sh username This will run the command as username given that you have permissions to sudo as that user. Therefore you need an automatic login from host A / user a to Host B / user b. youruserid ALL = (username) NOPASSWD: ALL with visudo and then sudo -u username bash is like su - username Apr 9, 2022 · In this brief tutorial, we discussed how to allow users to run commands as another user via sudo in Linux. In this […]. Then add that group to each user that you want to be able to su to that user without a password: usermod -a -G <groupName> <userName> (or usermod -a -G oracle tom). Apr 14, 2016 · Now you can run the commands as a normal user without being prompted for a root/sudo password (and therefore, eliminate the need to know the password altogether). To switch the logged-in user in this terminal window, enter the following: su –l [other_user] This not a full-blown tool to run arbitrary commands: you type op followed by a mnemonic configured by the system administrator to run a specific command. You'll still be running it as root. To run a command as another user, use the following syntax: To run your script as another user as one command, run: /bin/su -c "/path/to/backup_db. Feb 22, 2012 · I want to run a command as a not-root user in a startup script (rc. Let's try running the command whoami with runuser: May 13, 2006 · You need to use the sudo command which is use to execute a command as another user. This is done by prefixing the command you want to run with “sudo” . Oct 24, 2023 · Sudo (su "do") allows a permitted user to run commands and programs as another user, typically the superuser account with root privileges. Now try to Mar 18, 2024 · We will add a line that ensures our new user has sudo permissions without being asked for a password. Step 1: Overview on systemd This is different from creating a user that anyone can log in as without supplying a password, which is achieved by specifying an empty password and is very rarely useful. However there are three sudo commands I want to run without entering password: sudo reboot; sudo shutdown -r now; sudo shutdown -P now; How can I exclude these commands from password protection to sudo? The risk you run with this is that now anyone on the system can run helperapp as USER1. This generally works as expected on Ubuntu/Debian, but on RHEL the script which is executed as the command hangs. su - myuser -c aliased_cmd but this doesn't work. To do this, check below example. However I was thinking; without activating the root account; how can I execute the sudo commands which will not ask for user password to authenticate. This can be beneficial when you need to execute a specific command with the privileges of another user. Jun 9, 2015 · I want to run the command in user mode sudo but the terminal don't Need ask me the Password. See also Wikipedia. Sudo as Another User. qivg wkzk vdgpnv cewyk qqips dpvdl xzrhjkrt vzrl tofsb rxvl