Add basic support for restoring the previous session's directory

dotlib/cattle.sh

@@ -10,6 +10,11 @@ slay-reaper() {
   kill -KILL "$reaper_pid"
 }
 
+cd() {
+  command cd "$@"
+  printf %s "$PWD" > /tmp/iterm2-prev-dir.txt
+}
+
 {
   trap "" INT
   trap reset-elapsed USR1
@@ -27,3 +32,13 @@ slay-reaper() {
 
 reaper_pid=$! PROMPT_COMMAND+=(ping-timer)
 trap slay-reaper EXIT
+
+if [[ -f /tmp/iterm2-prev-dir.txt ]]; then
+  dir=$(</tmp/iterm2-prev-dir.txt)
+
+  if [[ -d $dir ]]; then
+    command cd "$dir"
+  fi
+
+  unset dir
+fi