context-grep

[James A. Woods]

# "Information is any difference that makes a difference." -- Gregory Bateson

> I recall some time ago there was a discussion of some kind of
> variation on grep that could be used to show, e.g.,
> all lines in a file containing "foo" occurring within, say,
> 6 lines of a line containing "bar".
> 
> Is there anything available that will do this?

sure, GNU e?grep would handle this as:

	grep -6 bar file | grep foo

thank mike haertel.  it has been available via 'ftp' from prep.ai.mit.edu
for quite some time.

p.s. anyone using the original fast e?grep under the stead of 4.3-tahoe
should switch to GNU grep now.