# vim: ft=sh:

# Run process in background
tobg() {
	"$@" >/dev/null 2>&1 &
}

# Generate random password (optionally takes length of password as first argument)
genpasswd() {
	local l=$1
	[ -n "$l" ] || l=16
	tr -dc A-Za-z0-9_ < /dev/urandom | head -c "$l" | xargs
}

# Generate random hex number of given lenght
genhex() {
	if [ -z "$1" ]; then
		echo "Size is required as first argument!" >&2
		return 1
	fi
	tr -dc 0-9A-F < /dev/urandom | head -c "$1" | xargs
}

# Run given command every second
dorepeat() {
	while true; do
		"$@"
		sleep 1
		echo
	done
}

# Clear all ssh control masters
ssh-clear() {
	rm -rf ~/.cache/ssh
	mkdir -p ~/.cache/ssh
}

# Chroot to bash to given path
chroot-bash() {
	sudo chroot "$1" /bin/bash
}

# Run command with inotifywait
# First argument has to be files then -- is expected and everything else
# is command to be executed when file changes.
inrun () {
	(
	set -e
	local TMPFS="$(mktemp --tmpdir inrun.XXXXXXXX)"
	trap "rm '$TMPFS'; trap '' EXIT; exit 0" EXIT INT QUIT TERM ABRT
	while [ $# -gt 0 -a "$1" != "--" ]; do
		echo "$1" >> "$TMPFS"
		shift
	done
	if [ $# -le 1 ]; then
		echo "Usage: inrun FILE.. -- COMMAND"
		return 1
	fi
	shift
	while true; do
		inotifywait -qe close_write --fromfile "$TMPFS" || true
		"$@" || true
	done
	)
}