You can use the following tools to search and sort files:
Extended version of grep.
Searches files for literal words.
Searches the system for filenames.
Searches files for text patterns.
Faster version of find; however, it depends on a database that is periodically updated by the weekly periodic job. If the database is out of date, find is more accurate.
Sorts a file (use -n for numeric sorting and -u to eliminate duplicates).
Searches binary files for text patterns.
Reports or filters duplicate lines in a file.
Extracts files from a Zip archive.
Searches compressed files for text patterns.
Creates a Zip archive.