在Shell脚本中取消sudo提示

Question

I don't want 'sudo' to prompt me for password while my script is running. And i do not want to enter sudo password as well using sudo -S. Is there any way to skip sudo lines and run next line of script. Or is there any way to print 'sudo access required' whenever sudo is prompted and running the script further.

Answer 1

You can test if the current user is root, like:

if [ "$(id -u)" != "0" ]; then
    echo "root access required"
    exit -1
fi

Answer 2

If you don't want to prompt a sudo password, just add your current user to /etc/sudoers (edit this file as root).

Find there a block, starts from comment:

# Allow members of group sudo to execute any command

And add there kind of this line:

YourUserName ALL=(ALL) NOPASSWD: ALL

Answer 3

For the record, a better approach would be to just copy the script and edit it to a non-root version.

That said, if you create a function to implement your sudo 's that requires a flag be set you can activate them at runtime, but skip them by default.

$: cat tst
#! /bin/env bash

dosudo() {
   if (( DOSUDO ))
   then sudo "$@"
   else echo "Skipping: sudo $@"
   fi
}

echo before
dosudo ls -d /tmp
echo after

Running it in default mode:

$: tst
before
Skipping: sudo ls -d /tmp
after

Running it active (I CTRL-C break out of the prompt here) -

$ DOSUDO=1 tst
before
[sudo] password for weblogic:
after