apropos keyword | |
Search the manual page names and descriptions. Same as man -k keyword. | |
ff file | A |
Search for a file in a directory hierarchy starting at current dir. Use only for files in lookup protected dirs (mode not 755). For other cases locate is more efficient. | |
file [-z] [-m magic] file[s] | |
Determine file type based on the first bytes of the files using rules in the system magic file or in magic. Can look into compressed files (-z). | |
find pathname[s] expression[s] | |
Search for files in a directory hierarchy that fulfill some conditions. locate is much faster but not always applicable (complex conditions, no locate database). An expression consists of options and tests such as -daystart -depth -maxdepth levels -mount -noleaf -xdev -name pattern -newer file -size n[bckw] -user uname and actions (see the manual for a comprehensive list) -exec command ; -fprint file ; -print True ; -prune combined by operators (default: logical and between expressions). To find e.g. files larger than 1 MB in the home directory use find HOME -size +1000k -print | Documentation |
info [-h] [-f filename] [-n nodename] [-o outputfile] [menuitems] | |
Read documentation in Info format. To learn navigating in info files type the command info info and then press the <h> key. | |
locate [-i] pattern | |
locate [-i] -r regexp | |
List files that match pattern or regexp. The information is extracted from a database. Depending on the configuration only a part of the file system may be contained in the DB. Option -i performs a case insensitive search To locate e.g. all files named "core" use locate "*/core" | Documentation |
man [-afktw] [[-s] section] name | |
Format and display the on-line manual pages. Can display all (-a) man pages, not just the match for name. Search for name in man pages using -k name (same as apropos) or display one line per man page found (-f, same as whatis). Produce postscript output on STDOUT with the -t option. With the -w switch only the location of the man page is displayed, not its content. | |
rpm -q select_options [query_options] | |
Query the RPM database. The most useful select options are: package select package -a select all installed packages -f file select package owning file -p file select uninstalled package contained in file Frequently used query options are: -i Display package name, version and description -l List files in package, use long format with -v | |
whatis command[s] | |
Display a one line man page description for command[s]. Same as man -f | |
where command[s] (tcsh and zsh only) | S |
Locate all occurrences of the binary for command[s] in search path. | |
whereis command[s] | |
Locate all occurrences of the binary, source, and manual page files for command[s] in search path. | |
which command[s] | S |
Show full path of command[s]. In zsh ls =command can also be used. | |
yum command [arguments] | |
RPM update program. Can be used to obtain information on installed and available RPM packages. Useful commands for unprivileged users: check-update checks if packages are available for update list [what] list information about [all, installed, recent, ...] packages provides find out which package provides some feature or file search find any packages matching a string deplist list all dependencies of a package |