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How do I run a script with root permissions?
A possible solution is to run the whole script using sudo, and to give that use sudo rights to exectute the scripts. In order to do that, you need to edit the /etc/sudoers file using the visudo command. Like this, executing this script will give you the permissions of the owner of the script (root).
How do I run a command as a root in shell script?
Therefore, to run a shell script or program as root, you need to use sudo command. However, sudo only recognizes and runs commands that exist in directories specified in the secure_path in the /etc/sudoers, unless a command is present in the secure_path, you’ll counter an error such as the one below.
What setuid 0?
Quoting the setuid(2) man page: “setuid() sets the effective user ID of the calling process. If the effective UID of the caller is root, the real UID and saved set-user-ID are also set.” So calling setuid(0) as (effective) root just sets the real uid to 0, too.
Why does setuid not work when executing shell script?
When executing shell scripts that have the setuid bit (e.g., perms of rwsr-xr-x), the scripts run as the user that executes them, not as the user that owns them. This is contrary to how setuid is handled for binaries (e.g., /usr/bin/passwd), which run as the user that owns them, regardless of which user executes them.
How to call script from a setuid root C program?
See the man pages of the setuid, seteuid, getuid, and geteuid to learn the exact semantics of the real and effective UIDs.
How to run a shell script as root ( Sudo )?
This will not work, the best thing is to put only the requires commands in the shell script. And then setuid the script itself, like this (using root): Like this, executing this script will give you the permissions of the owner of the script (root). EDIT: As mentioned in comments, stuid is not allowed for shell script.
Can a Perl script run a setuid script?
Perl is a notable exception. It explicitly supports setuid scripts in a secure way. In fact, your script can run setuid even if your OS ignored the setuid bit on scripts. This is because perl ships with a setuid root helper that performs the necessary checks and reinvokes the interpreter on the desired scripts with the desired privileges.