examples/functions/repeat2

   1 # To: chet@ins.CWRU.Edu
   2 # Subject: Bash functions
   3 # From: Sandeep Mehta <sxm@philabs.Philips.Com>
   4
   5 ##########################################
   6 #
   7 # repeat - clone of C shell builtin `repeat'
   8 #
   9 # usage: repeat <count> <command>
  10 #
  11 # It has been tested inside other functions and in conditionals like
  12 # if [ "`repeat <count> <command>`" ]; then COMMANDS [ else COMMANDS ] fi
  13 # Please send me fixes/enhancements.
  14 #
  15 # Sandeep Mehta <sxm@philabs.Philips.Com>
  16 ##########################################
  17 repeat()
  18 {
  19         local rcount=$1
  20
  21         if [ $# -le 1 ] || [ -z "$rcount" ]; then
  22                 echo "usage: repeat <count> <command>" 1>&2
  23                 return 2
  24         fi
  25
  26         shift
  27
  28         local acmd=("$@")
  29
  30         if [ $rcount -le 0 ]; then
  31                 echo "count must be greater than 0"
  32                 echo "usage: repeat <count> <command>" 1>&2
  33                 return 2
  34         fi
  35
  36         st=0
  37         while [ $rcount -gt 0 ]; do
  38                 eval "${acmd[@]}"
  39                 st=$?
  40                 rcount=$((rcount - 1))
  41         done
  42         return $st
  43 }