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linux_wiki:locate_read_and_use_system_documentation_including_man_info_and_files_in_usr_share_doc [2016/03/01 21:47] billdozor [Locate] |
linux_wiki:locate_read_and_use_system_documentation_including_man_info_and_files_in_usr_share_doc [2019/05/25 23:50] |
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| - | ====== Locate Read And Use System Documentation Including Man Info And Files In Usr Share Doc ====== | ||
| - | |||
| - | **General Information** | ||
| - | |||
| - | Using various documentation sources. | ||
| - | |||
| - | ---- | ||
| - | |||
| - | ===== man pages ===== | ||
| - | |||
| - | Index man page database | ||
| - | <code bash> | ||
| - | mandb | ||
| - | </ | ||
| - | * This is required for search results to be returned correctly (if it has not been done) | ||
| - | * This command replaces the " | ||
| - | |||
| - | \\ | ||
| - | Search man page title and description only | ||
| - | <code bash> | ||
| - | man -k vim | ||
| - | </ | ||
| - | |||
| - | \\ | ||
| - | Search man page documentation for keyword (title, description, | ||
| - | <code bash> | ||
| - | apropos passwd | ||
| - | </ | ||
| - | |||
| - | \\ | ||
| - | Open specific man page section | ||
| - | <code bash> | ||
| - | man 5 passwd | ||
| - | </ | ||
| - | * Opens section 5 of the passwd man pages | ||
| - | |||
| - | ---- | ||
| - | |||
| - | ===== info utility ===== | ||
| - | |||
| - | * info pages => Texinfo GNU documentation | ||
| - | * Organized like an FTP directory web page (links to other pages, going up/down the hierarchy, etc) | ||
| - | * Searches / | ||
| - | * If no info pages, it opens up the man page | ||
| - | * A " | ||
| - | * ? => to see command keys for info | ||
| - | * Arrow Up => Up one line | ||
| - | * Arrow Down => Down one line | ||
| - | * Tab => Next hyperlink | ||
| - | * Return => Follow hyperlink | ||
| - | * l => Go back to the last/ | ||
| - | * Space => One screenful forward | ||
| - | * Delete => One screenful backward | ||
| - | * s => Search for a pattern | ||
| - | * } => Next pattern match | ||
| - | * { => Previous pattern match | ||
| - | * n => next node on this level | ||
| - | * p => previous node on this level | ||
| - | * u => up one level | ||
| - | * Two commands: | ||
| - | * info = original command | ||
| - | * pinfo = menu items are clearly indicated (use this one) | ||
| - | |||
| - | Search Info Pages for " | ||
| - | <code bash> | ||
| - | pinfo --apropos tee | ||
| - | |||
| - | " | ||
| - | </ | ||
| - | |||
| - | \\ | ||
| - | Open the tee section of coreutils | ||
| - | <code bash> | ||
| - | pinfo coreutils tee | ||
| - | </ | ||
| - | |||
| - | ---- | ||
| - | |||
| - | ===== Other locations for documentation ===== | ||
| - | |||
| - | Documentation store for installed programs | ||
| - | * / | ||
| - | |||
| - | Search system for keywords | ||
| - | <code bash> | ||
| - | updatedb | ||
| - | locate passwd | ||
| - | </ | ||
| - | * updatedb => updates the search index, usually done via cron | ||
| - | |||
| - | \\ | ||
| - | Show location of binary | ||
| - | <code bash> | ||
| - | which passwd | ||
| - | </ | ||
| - | |||
| - | \\ | ||
| - | Search man page descriptions only | ||
| - | <code bash> | ||
| - | whatis passwd | ||
| - | </ | ||
| - | |||
| - | \\ | ||
| - | Find binary, source files, config files, and man page locations | ||
| - | <code bash> | ||
| - | whereis passwd | ||
| - | </ | ||
| - | |||
| - | \\ | ||
| - | Search documenation installed | ||
| - | <code bash> | ||
| - | rpm -qd packagename | ||
| - | </ | ||
| - | * Only if installed via a rpm package (either via rpm or yum) | ||
| - | |||
| - | ---- | ||
| - | |||
| - | ===== Finding Files With Locate And Find ===== | ||
| - | |||
| - | ==== Locate ==== | ||
| - | |||
| - | Search cache database for patterns, very fast, but simple pattern searching. | ||
| - | |||
| - | Install package | ||
| - | <code bash> | ||
| - | yum install mlocate | ||
| - | </ | ||
| - | |||
| - | \\ | ||
| - | Update cache database | ||
| - | <code bash> | ||
| - | updatedb | ||
| - | </ | ||
| - | |||
| - | \\ | ||
| - | Find files/ | ||
| - | <code bash> | ||
| - | locate syslog | ||
| - | </ | ||
| - | |||
| - | ---- | ||
| - | |||
| - | ==== Find ==== | ||
| - | |||
| - | Real time searching. Slower, but more flexible. | ||
| - | |||
| - | Find files/ | ||
| - | <code bash> | ||
| - | find / -name motd | ||
| - | </ | ||
| - | |||
| - | Find, starting in /, all files (type f) owned by rjones | ||
| - | <code bash> | ||
| - | find / -user rjones -type f | ||
| - | </ | ||
| - | |||
| - | Remove all files owned by rjones | ||
| - | <code bash> | ||
| - | find / -user rjones -type f -exec rm ' | ||
| - | </ | ||
| - | |||
| - | Find all files modified in the last 3 days | ||
| - | <code bash> | ||
| - | find / -mtime -3 -type f | ||
| - | </ | ||
| - | |||
| - | ---- | ||