wait_tries.sh

gistfile1.sh

#!/bin/bash

LOCK_FILE="pgr.lock"
MAX_TRIES=5

if [[ -f $LOCK_FILE ]]; then
  TRIES=$((`cat $LOCK_FILE` + 1))
  echo $TRIES > $LOCK_FILE
  
  if [[ $TRIES < $MAX_TRIES ]]; then
    echo "already running, let's try later"
  else
    echo "we waited too long, let's raise an error"
  fi
fi

wait_time.sh

#!/bin/bash

LOCK_FILE="pgr.lock"
MAX_WAIT=$((10 * 60)) # wait 10 minutes

if [[ -f $LOCK_FILE ]]; then
  UPDATED_IN_SECONDS=$((`date +%s` - `stat -c %Y $LOCK_FILE`))
  
  if [[ $UPDATED_IN_SECONDS < $MAX_WAIT ]]; then
    echo "already running, let's try later"
  else
    echo "we waited too long, let's raise an error"
  fi
fi