login: avoid external process call

harmathy · poettering · commit 5bcdbb224989 · 2018-01-12T18:02:57.000+01:00
Use a shell builtin of posix shells insteaf of calling 'which'. See also http://stackoverflow.com/a/677212
diff --git a/xorg/50-systemd-user.sh b/xorg/50-systemd-user.sh
@@ -2,6 +2,6 @@
 
 systemctl --user import-environment DISPLAY XAUTHORITY
 
-if which dbus-update-activation-environment >/dev/null 2>&1; then
+if command -v dbus-update-activation-environment >/dev/null 2>&1; then
         dbus-update-activation-environment DISPLAY XAUTHORITY
 fi
