Adding Text To each line of a file

Shell Programming and Scripting
1

How would I add text to the beginning of each line in a text file in a script right after the file is created from another text file.

2 
/bin/echo '%s/^/newText/g\nwq!' ex - myTextFile
3

I want to understand, not just use it. Yet I still can't get mine to work.

This is what I have ...

echo '%s/^/mrtsnc01/g\nwq!' ex - $ofile

what needs to be changed????

4

sorry - I missed the pipe:

/bin/echo '%s/^/newText/g\nwq!' | ex - myTextFile

give a full path to 'echo' - in order to avoid ksh's builtin 'echo'

5

thank you so so much, you saved my a$$.