Commands
apropos
keyword
Search the whatis database for keyword. Provides terse, but thorough, documentation. Good place to start looking if you're clueless. You must run makewhatis before using keyword.
Example: To retrieve information on the various files and executables dealing with passwords, use
apropos passwd
info
options keyword
Info is a hypertext reader that searches and displays on-line documentation about the specified keyword.
Example: To look up information on the cd command, use
info cd
Example: To look up information on the grep command and store it in output file grep.doc, use
info -o grep.doc grep
| --directory DIRECTORY-PATH, -d DIRECTORY-PATH | Look for info files in the specified directories. |
| --file FILENAME, -f FILENAME |
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