Sure Linux does provides search the manual page names and descriptions facility via apropos command.
Code:
apropos ‘delete a directory’
You can search using section. Most user commands located under man section 1:
Code:
apropos -s 1 remove
colrm (1) - remove columns from a file
cut (1) - remove sections from each line of files
kpackage (1) - Installs, removes, and queries packages.
lprm (1) - remove jobs from the line printer spooling queue
mrd (1) - remove an MSDOS subdirectory
pamdeinterlace (1) - remove ever other row from a PAM/PNM image
rm (1) - remove files or directories
rmdir (1) - remove empty directories
unlink (1) - call the unlink function to remove the specified file
Code:
apropos -s 1 remove| egrep "directory|directories"
You can also use man -k
Code:
man -k ‘delete directory’