Fix TMPDIR when switching user

zsh/zshrc

@@ -12,7 +12,7 @@ fi
 #
 # TMPDIR
 #
-export TMPDIR="${HOME}/tmp"
+export TMPDIR="$(getent passwd "${USER}" | cut -d: -f6)/tmp"
 if [[ ! -d "${TMPDIR}" ]]; then
     mkdir -p "${TMPDIR}"
 fi