The very helpful apropos command

The apropos command is one of the most helpful and yet underrated Linux commands. Let's see a brief description of what the apropos command does:

elliot@ubuntu-linux:~$ whatis apropos
apropos (1)          - search the manual page names and descriptions

WOW! The apropos command helps you in searching for the right command to use to achieve a specific task. For example, let's say you want to rename a file, but you are unsure which Linux command to use; in this case, you can run the apropos rename command:

elliot@ubuntu-linux:~$ apropos rename
file-rename (1p)     - renames multiple files
File::Rename (3pm)   - Perl extension for renaming multiple files 
gvfs-rename (1)      - (unknown subject)
mmove (1)            - move or rename an MSDOS file or subdirectory 
mren (1)             - rename an existing MSDOS file
mv (1)               - move (rename) files 
prename (1p)         - renames multiple files 
rename (1)           - renames multiple files
rename...