Modificare „Bash template”

Mai jos este un template 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">
#!/bin/bash
# bash script template version 0.1
#DBG=1
MYVERSION=0.1

# 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..."
}


# parse parameters
while [ $# -gt 0 ]; do
  case "$1" in 
# 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.