commandline session
$ 4.2.20 4 207---> apropos "memory management" XtAsprintf (3) - memory management functions XtCalloc (3) - memory management functions XtFree (3) - memory management functions XtMalloc (3) - memory management functions XtNew (3) - memory management functions XtNewString (3) - memory management functions XtRealloc (3) - memory management functions $ 4.2.20 5 208---> $ 4.2.20 5 208---> apropos "source install" libsrcinst (3) - GNU Source Installer library API sourceinstall (1) - GNU Source Installer command line tool $ 4.2.20 6 209---> apt-cache show sourceinstall N: Unable to locate package sourceinstall E: No packages found $ 4.2.20 7 210--->