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grep multiple text files in folder into 1 text file?

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#3 (permalink)

08-22-2002

Perderabo

Unix Daemon

Join Date: Aug 2001

Location: Ashburn, Virginia

Posts: 9,131

With 5,300 files, the `ls *` will probably exceed the max line length and pg is a slow way to cat a file.

Code:

#! /usr/bin/ksh
ls | while read filename ; do
      cat $filename
done > all
exit 0

will work. If the xargs program is available,

(ls * | xargs cat ) > all
will be a very fast solution.

I also wonder about the mention of grep. If you need to extract certain lines switch "cat" with "grep string" in both solutions.