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Full Discussion: Explaining behaviour of sudo bash "$0" "$@";
Top Forums Shell Programming and Scripting Explaining behaviour of sudo bash "$0" "$@"; Post 303025416 by boqsc on Friday 2nd of November 2018 05:24:18 AM
Old 11-02-2018
The Shell Version
Code:
vaidas@SATELLITE-L855:~/Desktop$ $SHELL --version
GNU bash, version 4.4.19(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http:://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

The Operating System and Hardware
Code:
vaidas@SATELLITE-L855:~/Desktop$ hostnamectl
   Static hostname: SATELLITE-L855
         Icon name: computer-laptop
           Chassis: laptop
        Machine ID: c1218e1a57f94029932e84f87d12c20f
           Boot ID: 5704dbfac79f4d66852cb7c22b1abf2f
  Operating System: Ubuntu 18.10
            Kernel: Linux 4.18.0-10-generic
      Architecture: x86-64

The Full Code
Code:
#!/bin/bash

# Checking for Permissions (Some funny reminder that the script requires to be ran with elevated permissions)
sudo -n true 2> /dev/null
if [ $? = 1 ]
  then echo "please run as root"
       echo "haha you have no power here";
       echo "You need to enter password";
  # else echo "Your password is cached or running as Root";
fi

# Execute the Script with elevated permissions
if [ $EUID != 0 ]; then
    sudo bash "$0" "$@";
    exit "$?";
fi


declare commandOutput=$(apt-add-repository multiverse);
if echo "$commandOutput" | grep -q "distribution component is already enabled"; then 
  echo "multiverse repository is already enabled"; 
fi


Last edited by boqsc; 11-02-2018 at 06:32 AM..
 

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LEARN ABOUT V7

chroot

CHROOT(1)							   User Commands							 CHROOT(1)

NAME

       chroot - run command or interactive shell with special root directory

SYNOPSIS

       chroot NEWROOT [COMMAND [ARG]...]
       chroot OPTION

DESCRIPTION

       Run COMMAND with root directory set to NEWROOT.

       --help display this help and exit

       --version
	      output version information and exit

       If no command is given, run ``${SHELL} -i'' (default: /bin/sh).

AUTHOR

       Written by Roland McGrath.

REPORTING BUGS

       Report chroot bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2009 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       chroot(2)

       The  full documentation for chroot is maintained as a Texinfo manual.  If the info and chroot programs are properly installed at your site,
       the command

	      info coreutils 'chroot invocation'

       should give you access to the complete manual.

GNU coreutils 7.1						     July 2010								 CHROOT(1)
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