A reimplementation of `pgrep` in shell

pgrep.sh

#!/bin/sh

## @author  Jay Goldberg
## @email  jaymgoldberg@gmail.com
## @license  Apache 2.0
## @description  Implement pgrep on platforms that don't have it
## @usage  source it, then pgrep <processname>
#=======================================================================

pgrep() {
  for pid in /proc/[0-9]*; do
    cat ${pid}/cmdline | tr '\000' ' '| grep "$1" &> /dev/null
    [ "$?" -eq 0 ] && echo $(basename $pid)
  done
}