f all

[expat]

Have a text file, want a copy containing all and only those lines containing, say, character [.

in unix, grep "\[" file.txt > new.txt
on MF, x all;f all [;del all x

How would you do it in Windows?

[DaveB]

Install perl and write a regex?

[dmini]

Download a grep for Dos/windows?
They do exist
Otherwise use Find & output to a file if the windows is advanced enough
Works on my xp pc - just tested it. You get a header line - just strip it off

Find "[" filename.txt > fileoutput

[Cowboy Bob]

Cygwin

Bash shell at a DOS prompt. I personally can't live without it.