Shell Programming and Scripting

Hi,

I am stll new to this shell stuff... but trying to teach myself (i'm the only one in my country's office that does this...). What I need to do is search for any line in our logs that contain both "USRLOGIN" and also the number "6141".

This is fine... but it also brings up lines where these patterns are part of a bigger string... e.g. 6141 could be inside "84785614149" or USRLOGIN inside "USRLOGINAS". How would I define that it the patterns provide should *not* be part of a bigger string?

This is what I kind of imagined:

Code:

cd xx/logs/2012/ 
for i in 0{1..4}; do zgrep "USRLOGIN" /$i/*/ecm1.* | zgrep "6141"

This also brings two other issues. The logs are kept in a directory by year/month/day. I grep from inside the year, and define the month as $i, but then can I just use the asterisk wildcard to define the day and actual file (/$i/*/ecm1.*).

Lastly, if I want to append a second grep on for 6141 (assuming this is the right way to do it), do I append it on the end as zgrep or grep? The files are .gz, but should the grep to the right of the pipe (|) be zgrep or grep.

Hope you can help a beginner! I searched lots but got confused. Please try not to get tooooo technical

Cheers,

Alex

use -w with your grep

Code:

 
zgrep -w

---------- Post updated at 03:48 PM ---------- Previous update was at 03:47 PM ----------

man zgrep

Code:

-w, --word-regexp
      Select only those  lines containing  matches  that  form  whole
      words.   The  test is that the matching substring must either be
      at the beginning of the line, or preceded  by  a non-word  con-
      stituent character.  Similarly, it must be either at the end of
      the line or followed by a non-word constituent character.  Word-
      constituent  characters are letters, digits, and the underscore.