shell logging

logging.sh

# Color escapes
RESET="\e[0m"
RED="\e[31m"
GREEN="\e[32m"
YELLOW="\e[33m"

LOGFILE_DIR="$HOME"
DATETIME=`date "+%m_%d_%Y_%H.%M.%S"`
LOGFILE="$LOGFILE_DIR/build_$DATETIME.log"
touch $LOGFILE

# Log and display both STDOUT and STDERR
log() {
  $@ 2>&1 | tee -a $LOGFILE
}
# Log both STDOUT and STDERR but display only STDERR
log!() {
  ($@ >> $LOGFILE) 2>&1 | tee -a $LOGFILE >&2
}

log_and_print_red() {
  printf "$RED"; log $@; printf "$RESET"
}
log_and_print_red!() {
  printf "$RED"; log! $@; printf "$RESET"
}
log_and_print_green() {
  printf "$GREEN"; log $@; printf "$RESET"
}
log_and_print_green!() {
  printf "$GREEN"; log! $@; printf "$RESET"
}
log_and_print_yellow() {
  printf "$YELLOW"; log $@; printf "$RESET"
}
log_and_print_yellow!() {
  printf "$YELLOW"; log! $@; printf "$RESET"
}