a batch file to replace words in text files

[Renat]

hi, everyone.
is there a command that I can use in Command Prompt to replace once word or string for another in a text file?
or is there a way to do it without actually opening the file manualy with notepad.exe or something and replacing it there? thank you!

[contrex]

BrainiacOutcast, you're getting a bit silly reviving ANOTHER three year old thread, and giving a wrong answer into the bargain!

check out "sed for Windows".