Re: Tr: Problem with grep v2.5.1

[Paul Jarc]

Simon Nieux <address@hidden> wrote:
>>     grep -B 3 "\.\.\.[0-9]\{3\}" wget.log | grep -v -B 3 "\.\.\.200"

That means that th second grep will print every line that doesn't
match "\.\.\.200", and the three lines preceding each of those lines.
To get what you want using grep, you'd need a different pattern in
place of "\.\.\.[0-9]\{3\}" that inherently excludes "...200" without
using -v:
grep -E -B 3 '\.\.\.([013-9][0-9]{2}|2[1-9][0-9]|20[1-9])'


paul