This section describes several methods you can use to get help with a Linux system and lists some helpful Web sites. See also Appendix B.
The /usr/src/linux/Documentation (present only if you install the kernel source code) and /usr/share/doc directories often contain more detailed and different information about a utility than either man or info provides. Frequently this information is meant for people who will be compiling and modifying the utility, not just using it. These directories hold thousands of files, each containing information on a separate topic. As the following example shows, the names of most directories in /usr/share/doc end in version numbers:
$ ls /usr/share/docabrt-2.0.7 iwl100-firmware-188.8.131.52 openldap-2.4.26 ...