Swiss File Knife - the open source file tree processor. It is a free multi function command line tool that belongs onto every usb stick.

Features: binary grep, tree size list, instant ftp server, line filter, text replace, dupfind, join files, md5 lists, run command on all files, extract strings, detab, patch, tail, hexdump. no installation.

No installation, no registry entries, no DLL´s - one exe handles all.