bash script sudo password

If you need a particular command within the script to be run without sudo privileges, you can run it as a . The 'sleep' command is there to prevent sending the password before the 'su' command is ready to read it. Last Activity: 27 April 2009, 10:46 AM EDT. Posts: 1 Thanks Given: 0. You can run the check by doing something like: if [ [ $ (/usr/bin/id -u) -ne 0 ]]; then echo "Not running as root" exit fi. Even without knowing the password of a user, the Sudo command can let you run scripts as that user. gives username the right to run the script with sudo, as in. . Share Make it executable to you: chmod u+x pass. Another approach is with sudo -A. For this explaination let's call the command pw and stick it /usr/local/bin. Thanked 0 Times in 0 Posts ssh -tt empId@env.linuxbox.com << EOF echo "Password\n" | sudo -S su . When this is done, the individual commands do not need sudo. Total. Note that this command has to correspond exactly . Houston Equipment Sales, Rental & Consignment. After several hours the script stops waiting for the user to enter the sudo password again. Let's say that the password for the account . Use -S option and | Instead, remove the sudo from the script and run the script itself with sudo: sudo myscript.sh That way, all commands within the script will be run with root privileges and you only need to give the password once when launching the script. This means you can do. to pass the password to sudo. Finally, to install sshpass, use this command: sudo pacman -Sy sshpass. However, the suggestions by others that do not involve passing the password as part of a command such as checking if the user is root are probably much better ideas for security reasons. I want operator users on this machine to mount their own cifs shares; The sudoers file already contains the /bin/mount -t cifs //*/* /media/* -o username=* command for all operators; I want the users to mount a cifs share through a script typing the password only once, not twice. The default caching time is 15 minutes. The -A argument tells sudo to execute a command that echos the password to stdout. SSH login works fine , but i am facing problem while logging to sudo.This is my command. # 1 04-27-2009 PatGmac. If you want the user to be able to restart tor specifically, with sudo in the script, use. Thread Tools: Search this Thread: Operating Systems OS X (Apple) Bash script prompt for sudo password? Join Date: Apr 2009. However, by default, the sudo command works in an interactive mode.. However, I would like, if possible, to be able to prompt the user for their sudo password and elevate the script's privileges automatically if the user doesn't run the script command with sudo (such as launching it from the GUI file manager), without the user having to restart the script. Create a file, say pass. Total. So my script so far looks like this: #!/bin/bash sudo -i cd my-server/bin ./run-server.sh I know that after sudo -i follows a prompt for password, so can I emulate that in my script? Is there a way to . Make the file accessible only to you: chmod go-rwx pass . Viewed 610 times 1 I am trying to write a bash script to login to ssh and login to sudo. Posts: 1 Thanks Given: 0. Show activity on this post. Now the script may do. I am trying to write a simple bash file. Linux base system; Bash shell(/bin/bash) Solution. In order to complete the entire bash script uninterrupted, I'm asking for the user password at the start for sudo, but I notice sudo understandably keeps the password session for something like 15 minutes only. Data. How to use authentication only once Also, the Sudo command is mostly used when trying to install, launch and exit an application that requires root user privilege. I want operator users on this machine to mount their own cifs shares; The sudoers file already contains the /bin/mount -t cifs //*/* /media/* -o username=* command for all operators; I want the users to mount a cifs share through a script typing the password only once, not twice. It'd be nice if sudo accepted a pre-encrypted password, so I could encrypt it within my script and not worry about echoing clear text passwords around. sudo /usr/sbin/service tor restart. ; The sudo password and the cifs password are identical. Now the script may do. Also I am curious if this is . in the sudo configuration, where script.sh has all the commands that the script has to do. If you want the user to be able to restart tor specifically, with sudo in the script, use. Providing Sudo Password in bash Script. Houston Equipment Sales, Rental & Consignment. Bash script prompt for sudo password? sudo is a powerful command line tool that enables a " permitted user " to run a command as another user (the superuser by default), as defined by a security policy. How to change your password via Bash? sudo ./wrapper.sh wrapper.sh: #!/usr/bin/env bash if [ "$EUID" -ne 0 ] then echo "Please run as root" exit fi ./some_other_script_01 ./some_other_script_02 Share Improve this answer However, I would like, if possible, to be able to prompt the user for their sudo password and elevate the script's privileges automatically if the user doesn't run the script command with sudo (such as launching it from the GUI file manager), without the user having to restart the script. Registered User. One of the lines has sudo at the beginning which of course requires the user to input their sudo password. bash passwd. $0.00. #!/usr/bin/env bash sudo ./some_other_script_01 sudo ./some_other_script_02 When I execute this script, I always see the password prompt, as usual: [sudo] password for user: However sometimes, inexplicably, before I have typed my password, ./some_other_script_01 starts getting executed echo password | sudo -S referring to the sudo manual page: -S, --stdin Write the prompt to the standard error and read the password from the standard input instead of using the terminal device. Currently the user gets asked for the password whenever the first sudo command is about to execute, but because this is often after a compile stage, there is always some time between starting the script and having to enter the password. This solution work by using 'script' command from the 'bsdutiles' package that setup a pty (a terminal). Create a file, say pass . That command is something you write. Some times you may need to run a command with root privileges, but you do not want to type a password using sudo command. Store. username ALL= (ALL) NOPASSWD: /usr/sbin/service tor restart. Ask Question Asked 9 months ago. # 1 04-27-2009 PatGmac. Active 8 months ago. For example, the below will safely pipe your password to the sudo command, without retaining a history of your password. To pull the effective uid use this command: id -u. -s [command] The -s (shell) option runs the shell specified by the SHELL environment variable if it is set or the shell as specified in the password database. Therefore, to run a shell script or program as root, you need to use sudo command. If no command is specified, an interactive shell is executed. The 'tail' command remove the "Password:" input line issued by 'su'. With this you always do sudo -A command. A better solution if you want to run something with sudo without putting in your password is to allow your user to do exactly that one command without password. This answer is not useful. But if you run echo newpw | passwd username it doesn't work because it prompts you for your current password before letting you enter in your new password. Share. The password must be followed by a newline character. This solution work by using 'script' command from the 'bsdutiles' package that setup a pty (a terminal). The 'tail' command remove the "Password:" input line issued by 'su'. Environment and Prerequisite. bash script to ssh with password and run commands. Traceback (most recent call last): File "/usr/l. Check if you have root permission in the script no more sudo calls needed. If the result is '0' then the script is either running as root, or using sudo. menton weather averages 0. It's easy enough to change another user's password via a Bash script - just do echo newpw | sudo passwd username and bam, you're done. and -u user, --user= user Run the command as a user other than the default target user (usually root). 1, 0. That is the history in memory or "~/.bash_history" file. Make the file accessible only to you: chmod go-rwx pass. Join Date: Apr 2009. In this case, whether each command inside the script contains sudo doesn't matter. 1. sudo /path/to/your/script. I would like to put the password entry + check at the beginning of the script. Open sudoers file with sudo visudo and add the following line (obviously replace the username at the beginning and the command at the end): alice ALL = NOPASSWD: /full/path/to/command In this tutorial, we'll look at how to tell sudo to work in a non-interactive mode — for example, passing the password as a parameter to it.. sudo chmod -R 777 /etc [sudo] password for myuser: <now I enter the password and hit ENTER> My question: how do I write a bash script that supplies the sudo command with my password so that I can just execute bash myscript.sh and it will make the necessary permission changes for me? username ALL= (ALL) NOPASSWD: /usr/sbin/service tor restart. If you want to run a script longer than that and still keep the privilege without typing password again, you don't need to worry about anything: simply run the script with sudo. menton weather averages 0. Share. 50. The -S switch makes sudo read the password from STDIN. bash script to ssh with password and run commands. "-S", means to use stdin for the password, Note that this command has to correspond exactly . $ echo "your_password" | sudo -S -k <command> "HISTIGNORE" means to not save this command into the history. On most if not all Linux systems, the security policy is driven by the /etc/sudoers file. . #!/bin/bash # Do other stuff first that requires SUDO # use su to switch back to the user that called this script with sudo so user settings apply correctly # since these changes happen in a new shell, they won't take effect in the . After several hours the script stops waiting for the user to enter the sudo password again. bash script to ssh with password and run commandsdresses for 12 year olds for a wedding. In this case, the script can be called normally:./script1.sh Approach 2. Password: Linux - Desktop This forum is for the discussion of all Linux Software used in a desktop context. Last Activity: 27 April 2009, 10:46 AM EDT. 1, 0. For each command in the script that needs sudo, create a line in sudoers specifically for that command. Registered User. 1 Answer Active Oldest Votes 2 Sudo once is enough, just start the wrapper.sh with sudo. Thanked 0 Times in 0 Posts This can be achieved by editing /etc/sudoers file and setting up correct entries. One of those commands is the sudo -i since I need to access some files in root. [Linux](EN) Use or pass sudo password in shell script. Currently the user gets asked for the password whenever the first sudo command is about to execute, but because this is often after a compile stage, there is always some time between starting the script and having to enter the password. Encrypting on the Command Line. sudo /usr/sbin/service tor restart. Another approach is with sudo -A . Store. $ sudo /path/to/script. cyanide poisoning treatment in cattle; vb net form designer not showing; For example, the below will safely pipe your password to the sudo command, without retaining a history of your password. also this needs to be automated like while sudo'ing to. Then pass your password safely to sudo: $ echo "your_password" | sudo -S -k <command> "HISTIGNORE" means to not save this command into the history. echo mypassword | sudo -S command. In Linux, the sudo command allows us to execute a command or script as the superuser. The 'sleep' command is there to prevent sending the password before the 'su' command is ready to read it. Bash script prompt for sudo password? Edit the file and make it a script that prints your password: #!/bin/sh printf '%s\n' 'yourpassword'. Process file or result of command in while loop line by line in shell script. The default caching time is 15 minutes. In order to complete the entire bash script uninterrupted, I'm asking for the user password at the start for sudo, but I notice sudo understandably keeps the password session for something like 15 minutes only. In this case, whether each command inside the script contains sudo doesn't matter. Data. $0.00. cyanide poisoning treatment in cattle; vb net form designer not showing; 1. sudo /path/to/your/script. I would like to put the password entry + check at the beginning of the script. Password: Linux - Desktop This forum is for the discussion of all Linux Software used in a desktop context. If you want to run a script longer than that and still keep the privilege without typing password again, you don't need to worry about anything: simply run the script with sudo. Also I am curious if this is . Trying to start an installation script in master I get [werner@xerneas archinstall]$ sudo python -m archinstall --script only_hd --dry_run Testing connectivity to the Arch Linux mirrors . In fact, Sudo stands for "Super User Do," and it logs all arguments. bash script to ssh with password and run commandsdresses for 12 year olds for a wedding. hi, i have a requirement where i need to sudo to another user in the shell script.suppose consider user A and B, first user A calls a shell script and then i need to sudo to user B which executes another shell script inside the earlier one. If a command is specified, it is passed to the shell for execution via the shell's -c option. Thread Tools: Search this Thread: Operating Systems OS X (Apple) Bash script prompt for sudo password? #!/bin/bash # Do other stuff first that requires SUDO # use su to switch back to the user that called this script with sudo so user settings apply correctly # since these changes happen in a new shell, they won't take effect in the . salmo allikm warhmat allah wabrakato i want to do script with sudo like sudo su and want to put password in the script not get from user because i to made it startup when booting and i don't know how | The UNIX and Linux Forums So it's full pathname would be /usr/local/bin/pw. Then we define either a Bash function or an alias so that script.sh is actually sudo /path/to/script.sh The only issue is if some commands must not be run as root, you need to insert some su - user -c "command" commands in the script. I'd like to remove the need for the user to type a password multiple times for a bash script that runs sudo commands. That is the history in memory or "~/.bash_history" file. ; The sudo password and the cifs password are identical. I wrote some Applescript which prompts for a password via a dialog box and then builds a custom bash command, like this: echo <password> | sudo -S <command> I'm not sure if this helps. $ sudo /path/to/script. However, sudo must be used to start the script as in . Place a line in sudoers for the script as a whole. Before we get into using the openssl command with scripts, let's become familiar with it by using it on the command line. This is useful for scripting or any other purpose. gives username the right to run the script with sudo, as in. Moreover, we'll discuss other approaches to run a command as the superuser without asking for . Method 1: Using "askpass". How can I loop for password until something like sudo echo returns 0, and then store the password in a variable to use script-wide? On Manjaro Linux, we can install OpenSSL with: sudo pacman -Sy openssl. Make it executable to you: chmod u+x pass; Edit the file and make it a script that prints your password: #!/bin/sh printf '%s\n' 'yourpassword' Now you can do this: SUDO_ASKPASS="./pass" sudo -A su - someuser

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