The term SysAdmin was first used on Multics. It comes from the "project" name used by system administrators. The system administration software for Multics was written in about 1969, by Joseph F. Ossanna and Michael J. Spier. No one remembers now who coined the term or adopted the convention of CamelCase.
lib/main.php:944: Notice: PageInfo: Cannot find action page
lib/main.php:839: Notice: PageInfo: Unknown action
lib/plugin/WlugLicense.php:99: Warning: Invalid argument supplied for foreach()