xrdb -version (return code: 0)
xrdb 1.1.0
xrdb --help (return code: 1)
usage: xrdb [-options ...] [filename]
where options include:
-help print this help message
-version print the program version
-display host:dpy display to use
-all do all resources [default]
-global do screen-independent resources
-screen do screen-specific resources for one screen
-screens do screen-specific resources for all screens
-n show but don't do changes
-cpp filename preprocessor to use [/usr/bin/cpp]
-nocpp do not use a preprocessor
-query query resources
-load load resources from file [default]
-override add in resources from file
-merge merge resources from file & sort
-edit filename edit resources into file
-backup string backup suffix for -edit [.bak]
-symbols show preprocessor symbols
-remove remove resources
-retain avoid server reset (avoid using this)
-quiet don't warn about duplicates
-Dname[=value], -Uname, -Idirectory passed to preprocessor
A - or no input filename represents stdin.