Automatic su password entry script 1) Yes I know it's bad practice and obomination to all things holy, but I'm not a sys admin at JP Morgan, I'm a hobbyist tooling about in a VM, in my pants, at home. I'm trying to write a bash script (in Ubuntu) that will backup a directory using tar. su does not. Thank you. 2. The script below uses expect to supply input to su by passing stdin through a tty. Unix / Linux / BSD Forums on Bytes. It read date from the standard input (keyboard), or from file descriptor FD if the -u option is supplied. Even if you get the password to su, you still have to deal with the fact that su will open a new shell, which means that your further commands will not be passed to it. Require bash script to be run with sudo (not as root user)? sudo has the option -S that lets you supply a password via command line argument. 1. General syntax is as follows: read -s -p “Password: ” VARIABLE . su fbgs -c "cp fbgs.jar /home/fbgs/server/plugins/" This works in the command line but when I put this in the script I need the password to be entered automatically. Can it possible for other program like logging via SSH too? ... "#!/bin/su root" allows users in super user mode to run the script without using the root password. So far I have: #!/bin/bash # Prompt for password. By using this site, ... That said, you should not even attempt to do this, especially considering you are hard coding the root password in a script. I have written a script to automate a software install. If you want super users to run the script with results that of root, this does that. Whenever I do the shell script su's to the user properly but the scripts stops executing until I exit out of the new shell that su put me into. The input is read to bash variable.This option p is suitable for reading Username.. read -sp PROMPT displays PROMPT without a new line and reads input from user in silent mode (does not echo back user input). Where,-s: Do not display password on screen. Share. You will need to write a script for the root operations along with a helper executable that can invoke it with the appropriate privileges. Automation of su password through shell script. I am running the script as root, but need to su to another user to configure and complile the program properly. ... Supply SU password in a bash script, within the script? We shall use read command with following options, read -p PROMPT displays PROMPT without a new line and echoes input read from user, character by character. Improve this answer. So I tried the following command: echo Password | su -S fbgs -c "cp fbgs.jar /home/fbgs/server/plugins/" But then I get this output: su: must be run from a terminal I have been doing a lot of research online and reading in the man pages but haven't been able to figure out how to pull it off. You would need a bash terminal and a text editor. Using su, is there a way to pass the password argument to the command on a single line, without invoking sudo as the users will not have admin rights? for example, I want to run a command that need root permission and when I write it in a bash script, it ask me "sudo" password for user but how can I automate it? echo "Enter password… Let me first do a quick summary of what our script is going to do. It then runs multiple SCP commands to different hosts, each time inputting the password so I don't have to do it repeatedly. How can I write an Script that enter my password for "sudo" command automatically? The script will then generate 5 random passwords with the length that was specified in step 1; Prerequisites. : We will have to option to choose the password characters length when the script is executed. How to su root in a bash script: I have been learning bash scripting and I am trying to write a simple script that will su root, with the password itself being in the bash script. Linux do not provide any special or specific command to read password. I have a bash script that I want to prompt for the password once so I don't have to put it in the file. However, bash shell comes with builtin command called read.

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