Re: [PLUG] Simple Shell help please..

[Stephen Gran <steve@lobefin.net>]

On Mon, May 01, 2006 at 10:04:18AM -0400,
Daniel.G.Roberts@sanofi-aventis.com said:
> Hi all I have the /etc/init.d startup script below that I need to
> modify but I don't script much anymore so I need a bit of help!
> 
> I need to test the $@ variable which is shown below and if it is the
> keyword "start" something else needs to happend...
> 
> If on the command line I type
> 
> /etc/init.d/bigsister start or /etc/init.d/bigsister restart
> 
> I need to have the /etc/init.d script see the "start" or "restart"
> argument and test what the word happens to be. Based on the word, it
> should then start a different action..see the ## lines If it is not
> "start" or "restart" then it can fall through and execute exec
> $bs_instdir/bin/bb_start "$@"
> 
> I have added a few comments see ## below to clarify what I am after..
> thanks!  Dan
> 
> #!/bin/sh
> #
> # chkconfig: 2345 98 99
> # description: Big Sister System and Network Monitor
> #
> # Wrapper script for bb_start: the init directories should only
> # contain shell scripts, no perl scripts ...
> #
> ### BEGIN INIT INFO
> # Provides: bigsister
> # Required-Start: $network $syslog
> # Required-Stop: $network $syslog
> # Default-Start: 3 5
> # Default-Stop:
> # Description: Start and Stop Bigsister
> ### END INIT INFO
> 
> bs_instdir=/usr/share/bigsister
> 
> [ -x "$bs_instdir/bin/bb_start" ] || exit 0
> 
> 
> ##If /etc/init.d/bigsister start or restart do these four lines below
> 	## export LANG=en_US
> 	## su bigsis /usr/share/bigsister/bin/bbd
> 	## su bigsis /usr/share/bigsister/bin/bsmon
> 	## su bigsis/usr/share/bigsister/uxmon/uxmon
> 
> ##otherwise do this
> exec $bs_instdir/bin/bb_start "$@"

The standard way of doing this is roughly:

case "$1" in
    start|restart)
       export LANG=en_US
       su bigsis /usr/share/bigsister/bin/bbd
       su bigsis /usr/share/bigsister/bin/bsmon
       su bigsis /usr/share/bigsister/uxmon/uxmon
     ;;
     *)
       exec $bs_instdir/bin/bb_start "$@"
     ;;
esac

$1 contains the first word in the arguments to the script.

-- 
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|  Stephen Gran                  | Phasers locked on target, Captain.      |
|  steve@lobefin.net             |                                         |
|  http://www.lobefin.net/~steve |                                         |
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