Bash template

Mai jos este un template primitiv de script bash care accepta parametri. Il puteti copia, modifica sau adapta dupa nevoi cata vreme cat il folositi in scopuri nobile.

<source lang="bash">

1. !/bin/bash
2. bash script template version 0.1
3. DBG=1

MYVERSION=0.1

1. usage function

usage() { HLP="myapp version $MYVERSION usage: $0 [options] myfirstarg [mysecondarg]

options:

   -param <param>      sample arg with param required
   -h, --help          this help
   --debug             enable debug output
   -v, --version       show version
   

"; echo "$HLP"; }

abort() {

   ecode=$1; shift
   echo "Error $ecode: $@"
   [ $DBG ] && echo "Exit code: $ecode"
   exit $ecode

}

dosomestuff() {

   echo "doing some stuff..."

}

dosomeotherstuff() {

   echo "doing some OTHER stuff..."

}

dodefaultstuff() {

   echo "doing DEFAULT stuff..."

}

1. parse parameters

while [ $# -gt 0 ]; do

 case "$1" in 

1. option requires a parameter

   -param ) [ $2 ] || abort 2 "$1: requires a parameter"; MYPARAM="$2"; shift 2 ;;

   -dosomestuff ) ACTION=dosomestuff; shift ;;
   -dosomeotherstuff ) ACTION=dosomeotherstuff; shift ;;

   -q|--quiet) QUIET=1; shift;;
   -v|--verbose) VRB=1; shift;;
   -h | --help ) usage; exit 0 ;;
   -ver*|-version ) echo "Version $MYVERSION"  ; exit 1 ;;
   --debug) DBG=1; shift ;;
  * ) 
   if [ -z $MYFIRSTARG ]; then MYFIRSTARG="$1"
   elif [ -z $MYSECONDARG ]; then MYSECONDARG="$1"
   fi
   shift ;;
 esac

done

[ $DBG ] && VRB=1 # enable verbose output if debug enabled [ $DBG ] && echo "entering main" [ $DBG ] && echo "current internal vars: ACTION=$ACTION; MYPARAM=$MYPARAM; MYFIRSTARG=$MYFIRSTARG; MYSECONDARG=$MYSECONDARG"

[ $VRB ] && echo "print some verbose output..."

case "$ACTION" in

   dosomestuff) dosomestuff;;
   dosomeotherstuff) dosomeotherstuff;;
   *) dodefaultstuff;;

esac

echo "All done." </source>

Nota: Script-ul foloseste anumite conventii specifice bash. Pentru a functiona cu /bin/sh pe alte sisteme de tip Unix este nevoie de modificari.