Bash retry function with delays.

[bash] run_retry

#!/bin/bash
# helper funciton for retry NUM_TRIES times with SLEEP_TIME delays between each
function run_retry {
    local SLEEP_TIME=$1
    local NUM_TRIES=$2
    shift 2
    local CMD=$*
    COUNT=0

    echo "Running '$CMD'"
    while [ $COUNT -lt $(($NUM_TRIES*$SLEEP_TIME)) ]; do
        eval "$CMD"
        EXIT_CODE=$?
        if [[ $EXIT_CODE -eq 0 ]]; then
            echo "Success!"
            return 0
        fi
        echo "Retrying in ${SLEEP_TIME} sec [${COUNT}/$(($NUM_TRIES*$SLEEP_TIME)) sec]"
        sleep $SLEEP_TIME
        let COUNT=COUNT+SLEEP_TIME
    done
    echo "Reached retry limit. Exiting..."
    return $EXIT_CODE
}
 # run_retry 1 10 "echo $HOME | grep jbond"
 # run_retry 1 10  curl google.com