Use oneliner conditionals

.xinitrc

@@ -6,21 +6,10 @@ sysresources=/etc/X11/xinit/.Xresources
 sysmodmap=/etc/X11/xinit/.Xmodmap
 
 # merge in defaults and keymaps
-if [ -f $sysresources ]; then
-    xrdb -merge $sysresources
-fi
-
-if [ -f $sysmodmap ]; then
-    xmodmap $sysmodmap
-fi
-
-if [ -f "$userresources" ]; then
-    xrdb -merge "$userresources"
-fi
-
-if [ -f "$usermodmap" ]; then
-    xmodmap "$usermodmap"
-fi
+if [ -f $sysresources ]; then xrdb -merge $sysresources; fi
+if [ -f $sysmodmap ]; then xmodmap $sysmodmap; fi
+if [ -f "$userresources" ]; then xrdb -merge "$userresources"; fi
+if [ -f "$usermodmap" ]; then xmodmap "$usermodmap"; fi
 
 # start some nice programs
 if [ -d /etc/X11/xinit/xinitrc.d ] ; then