AIX to SOLARIS conversion - (find -cmin option)

UNIX Solaris
1

I have a piece of code (below) in a .ksh script running on AIX. I need to convert the code to run .zsh on Solaris. Solaris's find command does not support the -cmin function. Suggestions??

The code searchs for a file (_filename) and determines if it has been written to or modified in the last 5 minutes. If it has, it goes to sleep for 5 minutes and then checks again.

LOOP=1
  while [ ${LOOP} -eq 1 ]
  do
    find . -cmin -5 -name ${_filename} | read NEW_FILE
    if [ ! -z ${NEW_FILE} ]
    then
      echo "INFO: preprocess_dc: Time index "`date`". The file ${_filename} is less than five minutes old."
      echo "INFO: preprocess_dc: Waiting $vSleepTime seconds to verify the file is not still being written."
      sleep $vSleepTime
    else
      LOOP=0
    fi
  done
2

I was not aware of this but Solaris 10's find(1) command does support cmin:
find(1) � find files (man pages section 1: User Commands) - Sun Microsystems

Otherwise you could use the -newer parameter, very crude .e.g:
$ touch /tmp/timer
$ sleep 300
$ find . -newer /tmp/timer -name ${_filename}