Shell – Allow another user to run a specific script as the ID

privilegesshell-script

I have a script somewhere in my home directory. I need to give another user or a group permissions such that when they execute that specific script, it executes as though I am logged in and has all permissions that my ID has. I do not want to use sudo or su and go through setting them as sudoers or entering passwords.

Best Answer

With sudo you can get very granular with your permissions. If you want to give a user permission to only run your script and nothing else you can add this line to your /etc/sudoers:

user ALL=(yourusername) NOPASSWD: /path/to/your/script

Then, as the other use, you would run:

sudo -u yourusername /path/to/your/script

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Shell – Executing a script in zsh – file permissions

When you run ./s, you tell the kernel to execute the program s. If you have execution permission, then the kernel reads the first few bytes of the file, sees the #! line so it knows that this is a script, and runs the interpreter, passing it the script name as its first argument. If you don't have execute permission, the kernel aborts the execution at the first step.

When you run zsh s, you execute zsh, and tell it to read the file called s and interpret it as commands. You aren't executing s, you're executing zsh. Same thing with sh s or cat s.

When you run source s, again, you tell zsh to read a file, so what matters is that you have read permission on it.

Detecting cron tasks run by another user

Which version of Ubuntu? If it's using systemd, you could rely on the cron cgroup created by systemd I guess, as all processes started by cron will be a direct child.

One of the option to get this information is to use the ps command with something like:

ps -eo user,pid,cmd,unit | grep cron.service | grep flag03

Best Answer

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