saveloop

#!/usr/bin/env bash

# NOTE: not fit for samba drives (timestamp issue, no inotifywait support → use saveloop 2)

# examples:
# single file:
#  ./helper/saveloop 03_packages.js "sudo ./03_packages.js"
#
# entire folder:
#  ./helper/saveloop . "clear && sudo ./03_packages.js"
#       or
#  ./helper/saveloop . "clear" "sudo ./03_packages.js"
#
# NOTE: you will run out of handles, if that
#       includes a node_modules
#
# with clear before:
#  ./helper/saveloop . "clear" "sudo ./03_packages.js"

# REF https://superuser.com/a/181543
# REF https://gist.github.com/metaphox/74b2b10a0571a4c30fd14fa004c49eae
# REF while inotifywait -q -e close_write .gitalias; do git share2; done

if [[ "$#" -lt 2 ]]; then
	echo ""
	echo -e "\e[91;48;5;52m  usage: <watchfile> <execution script> ✗✗✗\e[0m"
	echo -e "example: saveloop <watchfile-or-dir>  \"foo param1 param2\" [\"command2\"] [\"command3\"]"
	echo -e "(node_modules within a watchdir won't be watched)"
	exit
fi

if [[ ! -e "$1" ]]; then
  echo -e "\e[91;48;5;52m  to be watched file/folder '$1' does not exist ✗✗✗\e[0m"
fi

# mind the non-quotation on $2 (on purpose)
# --recursive
echo 'watching.... (saveloop variant 1)'
# do once before (everyone expects that)
$2;$3;$4;

# mind the non-quotation on $2 (on purpose)
while inotifywait -rqq -e close_write --exclude 'node_modules' "$1"; do $2;$3;$4; done