diff --git a/tools/killall5 b/tools/killall5
new file mode 100755
index 0000000..149e736
--- /dev/null
+++ b/tools/killall5
@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+# A simple reimplementation of killall5 from sysvinit-tools
+
+get_my_tree() {
+	local my_pid
+	read my_pid garbage < "/proc/self/stat"
+	child="$my_pid"
+
+	while [[ "$parent" != 1 ]]; do
+		read a b c parent d < "/proc/$child/stat";
+		child="$parent"
+		echo "$parent"
+	done
+}
+
+get_realname() {
+	readlink -e "$1"
+}
+
+get_all_procs() {
+	local processlist
+
+	for i in /proc/*/exe; do
+		process_dir="${i%/*}"
+		process_pid="${process_dir##*/}"
+
+		readlink -e "$i" &>/dev/null && {
+			echo "$process_pid"
+		}
+	done
+}
+
+get_procs_to_kill() {
+	for i in "${all_procs[@]}"; do
+		unset skip
+		for p in "${my_tree[@]}"; do
+			[[ "$i" == "$p" ]] && { skip=1; }
+		done
+
+		[[ "$skip" ]] || { echo "$i"; }
+	done
+}
+
+main() {
+	my_tree=( $(get_my_tree) self thread-self )
+	all_procs=( $(get_all_procs) )
+	procs_to_kill=( $(get_procs_to_kill) )
+
+	signal="${1:-"-15"}"
+
+	kill "$signal" "${procs_to_kill[@]}" 2>/dev/null
+
+	return 0
+}
+
+main "$@"