From 5b0e551b5a3584618e06bfde769878b4b6944835 Mon Sep 17 00:00:00 2001
From: Christoph Egger <christoph@christoph-egger.org>
Date: Sat, 1 Aug 2015 19:09:31 +0200
Subject: [PATCH] more idiomatic check for systemctl

---
 zshrc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/zshrc b/zshrc
index 64ad4ea..1f54e35 100644
--- a/zshrc
+++ b/zshrc
@@ -65,7 +65,7 @@ precmd () {
     vcs_info
     setWindowTitle ${USER}@${HOST}
 
-    if [[ $UID == 0  && -f `which systemctl` ]]
+    if [[ $UID == 0 && $+commands[systemctl] != 0 ]]
     then
       use_systemd=true
       systemd_failed="`systemctl --state=failed | grep failed | cut -d \  -f 2 | tr '\n' ' '`"
@@ -93,7 +93,7 @@ case "${DOMAIN//cs.fau.de/informatik.uni-erlangen.de}" in
 		;;
 esac
 
-if [[ $UID == 0  && -f `which systemctl` ]]
+if [[ $UID == 0 && $+commands[systemctl] != 0 ]]
 then
   PROMPT=$'%{$fg[red]>>  $systemd_failed$reset_color%}\n'
 else
-- 
2.39.5