Non-real-time lookup (database lookup)
locate
The pre-built file index database on the query system is based on the database
/var/lib/mlocate/mlocate.db
Relying on pre-built indexes
The index construction is automatically performed when the system is relatively idle (periodic task), and the administrator manually updates the database (updatedb)
The index building process needs to traverse the entire root file system, which consumes resources.
Job Features
Find fast
Fuzzy lookup
non-real-time lookup
The full path of the file is searched, not just the file name
May only search directories where the user has read and execute permissions
usage
locate filename
Options
-i ignore case
-n N only list the first N matching items
-r use regular