Log the command's stdout&stderr to $ERRLOGPATH if failed. e.g. _le clang a.cpp

le.sh

function _le {
  # Usage: _le command

  local file=$(mktemp)
  
  # Run the supplied command in screen, and print the exit code on exit
  local screen_cmd='trap '"'"'echo -en "\n"$?'"'"' EXIT; '$@
  screen -Logfile $file -L bash -c "$screen_cmd"
  
  # Overwrite "screen is terminating" message with empty
  echo -ne '\033[F'
# echo -n "[screen is terminating]"
  echo -n "                       "
  
  # Last line shows the exit code
  local exit_status=$(tail -1 $file | tr -d '[:space:]')
  sed -i '$d' $file
  
  # Show the log as if it was directly printed to console
  cat $file
  
  if [ "$exit_status" == "0" ]; then
    # If the command succeeded, remove the log
    rm $file
  else
    mkdir -p $ERRLOGPATH
    local uuid=$(python -c 'import sys,uuid; sys.stdout.write(uuid.uuid4().hex)')
    local cmd=$(echo "$@" | cut -d ' ' -f1 | tr -d '[:space:]')
    local new_file="$ERRLOGPATH/$cmd-$exit_status-$uuid.log"
    mv $file $new_file
    echo "Saved to $new_file"
  fi
  return $exit_status
}