*Why* does using /dev/null in find/grep display the file name?
Posted
by Jonathan
on Super User
See other posts from Super User
or by Jonathan
Published on 2010-05-13T12:38:58Z
Indexed on
2010/05/13
12:44 UTC
Read the original article
Hit count: 199
find . -name "*.java" -exec grep "foo" {} \;
This just prints matches, no file name.
find . -name "*.java" -exec grep "foo" /dev/null {} \;
But this prints file name as well.
Why? What are the mechanics of find/grep that cause file name to print when /dev/null is inserted into the mix?
PS - yes, I know I can do "grep -H"
© Super User or respective owner
