misc/luabash/example/example.sh

   1 #!/bin/bash
   2 # --- T2-COPYRIGHT-NOTE-BEGIN ---
   3 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
   4 #
   5 # T2 SDE: example.sh
   6 # Copyright (C) 2006 The T2 SDE Project
   7 #
   8 # More information can be found in the files COPYING and README.
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; version 2 of the License. A copy of the
  13 # GNU General Public License can be found in the file COPYING.
  14 # --- T2-COPYRIGHT-NOTE-END ---
  15
  16 #
  17 # This is a simple lua bash example.
  18
  19 # init lua bash and load code chunk from file internal.lua.
  20 enable -f ../luabash.so luabash
  21 luabash load ./internal.lua
  22
  23 # perform some arithmetic using a lua function called "plus".
  24 total=0
  25 for ((i=1;i<3;i++)) ; do
  26    for ((j=1;j<3;j++)) ; do
  27         plus $i $j
  28    done
  29 done
  30 echo "total sum is: " $total
  31
  32
  33 # bash function to be called from within lua context
  34 some_bashy_function ()
  35 {
  36     if [ -n "$2" ] ; then
  37         shift
  38         some_bashy_function $@
  39         echo "$1"
  40     fi
  41 }
  42
  43 # call the lua function that calls bash function above
  44 callbash
  45
  46 # test if io redirection works
  47 cat <<EOF | redirections | sed 's,xx,yy,g'
  48 line one
  49 line two
  50 line three
  51 EOF
  52
  53 # print ten shell variables
  54 printenv | head -n 10
  55
  56 one
  57 echo $?
  58
  59 zero
  60 echo $?
  61
  62 str
  63 echo $?
  64
  65 boolean
  66 echo $?