shell snippet

snippet

#!/bin/bash

set -o nounset
set -o privileged
set -o errtrace

export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin

readonly LOG_TS_FMT='+%Y-%m-%d %H:%M:%S'

function logTimestamp {
	date $LOG_TS_FMT
}

function error {
	echo "E: $(logTimestamp) $@" >&2
}

function warn {
    echo "W: $(logTimestamp) $@" >&2
}

function info {
    echo "I: $(logTimestamp) $@" >&2
}

function errHandler {
    local SRC=$1; shift
    local LINE=$1; shift
    local CMD=$1; shift
    error "failed execution of '$CMD' at $(basename $SRC):$LINE"
    exit 255
}

function cleanup {
	return 0
}

trap 'errHandler $BASH_SOURCE $LINENO $BASH_COMMAND' ERR
trap 'cleanup; exit 1' TERM
trap 'cleanup; trap - INT; kill -INT $$; exit 1' INT