add mkvoid - a command to create temporary dirs in memory

dotfiles/system/etc/zsh/zshrc

@@ -113,6 +113,29 @@ swap-files() {
 	mv "$1" "$TMP" && mv "$2" "$1" && mv "$TMP" "$2"
 }
 
+function die () {
+	echo "died during ${1}"
+	exit 1
+}
+
+function mkvoid () {
+	__MKVOID_TARGET="$1"
+	__MKVOID_PATH="${__MKVOID_TARGET:P}"
+	__MKVOID_DIR="${__MKVOID_PATH:h}"
+	__MKVOID_NAME="${__MKVOID_PATH:t}"
+	__MKVOID_ID="/dev/shm/void/${__MKVOID_PATH:l:gs/\///:gs/ //}"
+	
+	mkdir -p "/dev/shm/void" || die "mkdir void"
+	mkdir "${__MKVOID_ID}" || die "mkdir shm"
+	mkdir -p "${__MKVOID_DIR}" || die "mkdir fs"
+	ln -s "${__MKVOID_ID}" "${__MKVOID_PATH}" || die "ln"
+	pushd "${__MKVOID_PATH}" > /dev/null || die "pushd"
+	zsh
+	popd > /dev/null
+	rm -f "${__MKVOID_PATH}" || die "rm link"
+	rm -rf "${__MKVOID_ID}" || die "rm void"
+}
+
 # history including search
 HISTFILE=~/.history
 HISTSIZE=10000000