locate - find files by name
-i, --ignore-case
Ignore case distinctions when matching patterns.
-b, --basename
Match only the base name against the specified patterns.
-c, --count
Instead of writing file names on standard output, write the number of matching entries only.
-e, --existing
Print only entries that refer to files existing at the time locate is run.
-L, --follow
When checking whether files exist (if the —existing option is specified), follow trailing symbolic links. This causes broken symbolic links to be omitted from the output.
--regex
Interpret all PATTERNs as extended regexps.
-r, --regexp REGEXP
Search for a basic regexp REGEXP. No PATTERNs are allowed if this option is used, but this option can be specified multiple times.