A bash function to wait and retry command.

wait-and-retry.sh

# Public: Execute commands until 5 consecutive time waiting 15 seconds in each retries.
#
# Takes a single argument.
#
# $@ - Passed argument to be executed.
#
# Examples
#
#   retry rake spec
#
# Returns the exit code of the last command executed in debug mode or 0
function wait_n_retry() {
    retry_count=0
    until [ $retry_count -ge 5 ]; do
        return $@ && break
        retry_count=$(($retry_count + 1))
        echo "Retrying command \"$@\" : count -$retry_count \n"
        sleep 10
    done
}