pyln

#!/bin/bash
#
# Zum anlegen eines Links im Pfad (wo auch das pyln Script liegen sollte) 
# um so Pythonscripts ohne ./ und .py einfach mit dem Namen aufrufen zu koennen
# CC by SA 2012 Stefan Gehrmann  
#
parameter=$@
pfad=`pwd`
devapp=`which pyln` # bei mir /home/stefan/bin/pyln
if [ $0 = $devapp ]; then
  if [ $# -ne 1 ]; then
    echo "To make a new Link for a Pythonscripts give a Filename as first parameter!"
    exit
  fi
  `echo $1 | grep -qE ".py$"`
  if [ $? -eq 1 ]; then
    f=$1
  else
    echo "Filename ends with .py ( it will be shorten )!"
    gl=${#1}
    f=${1:0:$((gl-3))}
    echo "Linkname is now $f."
  fi
  if [ -f $pfad/$f.py ]; then
    lnkapp=`dirname $devapp`/$f
    `ln -s -T $devapp $lnkapp`
    echo "Link created as $lnkapp ( delete with $f rm )"
  else
    echo "The given Linkname must be a file like $f.py in this Folder."
  fi  
  exit
else
  if [ $# -eq 1 ]; then
    if [ $1 = "rm" ]; then
      `file $0 | grep -q "symbolic link"`
      if [ $? -eq 0 ]; then
        `rm $0` 
        echo "Link $0 is removed."
      else
        echo "Delete only for symbolic link allowed. $0 $?"
      fi
      exit
    fi
  fi
fi
oIFS=$IFS
IFS=/
ary=($0)
IFS=$oIFS
cnt=${#ary[@]} 
dateiname=${ary[$cnt-1]}
p="python --version"
if [ -f $pfad/$dateiname.py ]; then
  echo ------ starting python  $pfad/$dateiname.py $parameter
  python $pfad/$dateiname.py $parameter
  echo ------ end of $dateiname.py
else
  echo "This Link runs only, if there is the same file like $dateiname.py in your working directory."
fi