bash: logging a la log4j

logging.sh

#!/usr/bin/env bash

# Debugging
# set -x
# Stop on error
set -e
# Exit if variables are not set (recommended)
set –u

logfile=file.log
tstp() {
    date +"%Y-%m-%d %H:%M:%S,%3N"
}

# TODO save the output of $@ to a the ${logfile}

exeinf() {
    echo "INFO " $(tstp) "$ "$@ | tee --append ${logfile}
    $@
}
exeerr() {
    echo "ERROR" $(tstp) "$ "$@ 2>&1 | tee --append ${logfile}
    $@
}

exeinf "Executing bash command: ${0} $@"
exeerr "Executing bash command: ${0} $@"