Open Source Grep Tools

Create zip files, extract zip files, replace text in files, search in files using expressions, stream text editor, instant command line ftp and http server, send folder via network, copy folder excluding sub folders and files, find duplicate files, run a command on all files of a folder, split and join large files, make md5 checksum lists of files, remove tab characters, convert CR/LF, list newest or biggest files of a folder, compare folders, treesize, show first or last lines of a file, find filenames fast using index files, rename many files using expressions, copy part of a file, change times of a file, set file time from filename, print colored text to terminal, convert csv to tab separated, download files from web, send http or udp requests, print tcp or udp traffic, create hexdump of files, join many text files into one, list nested .zip .tar .tar.gz .tar.bz2 archive contents. Fully portable, for USB stick, without installation. For Windows, Linux and Mac OS/X.

OpenVMS-inspired "dir", "copy", "purge" commands that support file version numbers. "dir -resolution" makes summaries of disk usage. "rename -lower -portable" cleans up filenames. grep-like "search". "filter" maps characters, trims blanks,

PHP web interface to locate, grep and xargs - find files from browser

Finddupe is a VERY FAST command line C program to catalog very large archives, identifying duplicate files even when offline. It has many features. You can easily grep a catalog to find what you have, and locate where it is.