Tips for replacing strings in a shell

Replace, which is included with MySQL.

Usage (matching is based on the comparison length ):
Replace from to [from to]... -- file 1 file 2
-- The following file list may also be changed to standard input.

For example: Stlxv @ stlxvcomputer :~ / Workspace / Duniyasystem / Gui / VM $   Echo   " Clash " | Replace   " H "   " CC "  
Clascc

Therefore, it is easy to write such a command, similar to copy class. *. H class. *. CC in DOS:ForX in 'lsClass.*.H ';
Do 
CP$ X'Echo $ X |Replace H CC ';
Done