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Top Forums Shell Programming and Scripting Explaining behaviour of sudo bash "$0" "$@"; Post 303025418 by rbatte1 on Friday 2nd of November 2018 06:00:36 AM
Old 11-02-2018
If you move the sudo outside the if (and therefore run it every time) the code will call itself every time, and call itself, and call itself..........

The exit is necessary because otherwise you will drop through and try to run the remainder of the script as a non-root user. An alternate to the exit might be to drop the current script and re-start it with sudo like this:-
Code:
if [ $EUID != 0 ]; then
    exec sudo bash "$0" "$@";
fi



I hope that this helps,
Robin
This User Gave Thanks to rbatte1 For This Post:
 

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VIEW-OS(1)						      General Commands Manual							VIEW-OS(1)

NAME
viewsudo - execute a command as another (virtual) user SYNOPSIS
viewsudo [-g groupname|#gid] [-u username|#uid] command DESCRIPTION
viewsudo allows a user to execute a command as the superuser or another user in View-OS. OPTIONS
viewsudo accepts the following command line options: -g group Normally, viewsudo sets the primary group to root. The -g option causes sudo to run the specified command with the primary group set to group. To specify a gid instead of a group name, use #gid. When running commands as a gid, many shells require that the '#' be escaped with a backslash ('[u2019]). If no -u option is specified, the command will be run as the invoking user (not root). In either case, the primary group will be set to group. -u user The -u option causes viewsudo to run the specified command as a user other than root. To specify a uid instead of a user name, use #uid. When running commands as a uid, many shells require that the '#' be escaped with a backslash ('[u2019]). RETURN VALUES
Upon successful execution of a program, the exit status from viewsudo will simply be the exit status of the program that was executed. SEE ALSO
viewsu(1), sudo(1), linux.defs(5) AUTHORS
View-OS is a project of the Computer Science Department, University of Bologna. Project Leader: Renzo Davoli. <http://www.sourceforge.net/projects/view-os> Howto's and further information can be found on the project wiki <wiki.virtualsquare.org>. NOTE
Most part of the text is taken from sudo(1). VIEW-OS: a process with a view August 8, 2009 VIEW-OS(1)
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