dirname - strip non-directory suffix from file name
Print NAME with its trailing /component removed; if NAME contains no /'s, output `.' (meaning the current directory).
Written by David !MacKenzie? and Jim Meyering.
Report bugs to <firstname.lastname@example.org>
Copyright 2000 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
The full documentation for dirname is maintained as a Texinfo manual. If the info and dirname programs are properly installed at your site, the command info dirname should give you access to the complete manual.