# minimal wrapper to execute a command every given seconds (by default 60) # useful to implement very basic rate-limiting when executing commands

nofork

#!/bin/bash
# minimal wrapper to execute a command every given seconds (by default 60)
# useful to implement very basic rate-limiting when executing commands

set -u
set -e

WAIT=${WAIT:-60}
STATEDIR=${STATEDIR:-/tmp/nofork}

[ -d "$STATEDIR" ] || mkdir "$STATEDIR"

cmdname=${@//\//_}
cmdfile=$STATEDIR/$cmdname
statcmd="stat --printf %Y"
[ $(uname -s) = "Darwin" ] && statcmd="stat -f %m -t %s"

if [ -e "$cmdfile" ]; then
  mtime=$($statcmd -- "$cmdfile")
  now=$(date +%s)
  [ $(( $now - $mtime )) -lt $WAIT ] && exit 0
  rm -f -- "$cmdfile"
fi

touch "$cmdfile"
exec "$@"