How to grep a string in two different files,
I am having the following scenario
TextFile1
Date (dd/mm)Time Server IP Error Code
===========================================================================
10/04/2008 10:10 ServerA xxx.xxx.xxx.xxx 6
10/04/2008 10:10 ServerB xxx.xxx.xxx.xxx 9
10/04/2008 10:10 ServerC xxx.xxx.xxx.xxx 16
10/04/2008 10:10 ServerD xxx.xxx.xxx.xxx 60
TextFile2
Date (dd/mm)Time Server IP Error Code
=======================================================================
09/04/2008 10:10 ServerA xxx.xxx.xxx.xxx 0
09/04/2008 10:10 ServerB xxx.xxx.xxx.xxx 0
09/04/2008 10:10 ServerC xxx.xxx.xxx.xxx 0
08/04/2008 10:10 ServerA xxx.xxx.xxx.xxx 0
08/04/2008 10:10 ServerB xxx.xxx.xxx.xxx 0
08/04/2008 10:10 ServerC xxx.xxx.xxx.xxx 0
07/04/2008 10:10 ServerA xxx.xxx.xxx.xxx 0
07/04/2008 10:10 ServerB xxx.xxx.xxx.xxx 0
07/04/2008 10:10 ServerC xxx.xxx.xxx.xxx 0
grep the date for server A with error code = 0 into output.txt
output.txt
1st - cat all text files together into 1 huge txt file (strating with most recent date 1st)
cat file1.txt file2.txt file3.txt > output1.tmp
then grep this:
grep 'ServerA *[0-9][0-9]*\.[0-9][0-9]*\.[0-9][-9]*\.[0-9][0-9]* *0' output1.tmp
it looks nasty but the spaces, stars, [0-9]s, backslashes, full stops and spaces are needed to cope with the IP addresses where any number of integeres must be accepted - note before the last *0 there are 2 spaces - this is not a typo - the star means 'zero or more occurrences of the previous character' (in this case a space) - adding an extra space ensures 1 or more spaces are read
the [-9] should be a [0-9], sorry
Does this help ??
$cat file1
10/04/2008 10:10 ServerA xxx.xxx.xxx.xxx 6
10/04/2008 10:10 ServerB xxx.xxx.xxx.xxx 9
10/04/2008 10:10 ServerC xxx.xxx.xxx.xxx 16
10/04/2008 10:10 ServerD xxx.xxx.xxx.xxx 60
$cat file2
09/04/2008 10:10 ServerA xxx.xxx.xxx.xxx 0
09/04/2008 10:10 ServerB xxx.xxx.xxx.xxx 0
09/04/2008 10:10 ServerC xxx.xxx.xxx.xxx 0
08/04/2008 10:10 ServerA xxx.xxx.xxx.xxx 0
08/04/2008 10:10 ServerB xxx.xxx.xxx.xxx 0
08/04/2008 10:10 ServerC xxx.xxx.xxx.xxx 0
07/04/2008 10:10 ServerA xxx.xxx.xxx.xxx 0
07/04/2008 10:10 ServerB xxx.xxx.xxx.xxx 0
07/04/2008 10:10 ServerC xxx.xxx.xxx.xxx 0
$awk -F" " '$5==0 && $3=="ServerA"{print $1}' file1 file2 | sort -r | head -1
09/04/2008
aigles
April 22, 2008, 9:11am
5
The same with a modified sort command :
awk '$5==0 && $3=="ServerA"{print $1}' file1 file2 | sort -t/ -r -k3,3 -k2,2 -k1,1 | head -1
Jean-Pierre.
era
April 22, 2008, 12:46pm
6
Incidentally, if you want to explore davenorm's solution, I believe there is really no need to cat the files. Just run grep on them all in one go.
grep -h 'ServerA *[0-9][0-9]*\.[0-9][0-9]*\.[0-9][-9]*\.[0-9][0-9]* *0' file1.txt file2.txt file3.txt
The -h option is for suppressing the printing of the file name with the match. If your grep doesn't have that, perhaps it's acceptable to simply leave it off, or switch to e.g. sed which in principle can do the same search with a very minor couple of modifications, and doesn't print file names.
era
April 22, 2008, 12:46pm
7
(Double post because of server timeout, sorry.)
Please click one of the Quick Reply icons in the posts above to activate Quick Reply.
Hi ,
only " sort -r " may create a if the dates are of differeny months or years.
That may work well if all the dates belong to same month and year.
correct me if iam wrong in the above case.
By the way, another solution,
grep -h ServerA file1 file2 | awk '{if ($5==0 ) {print $1}}' | sed 's#\(..\)/\(..\)/\(.*\)#\3\2\1#' | sort -r | head -1 | sed 's#\(....\)\(..\)\(..\)#\3/\2/\1#'
09/04/2008
multiple posts bcoz of server problem...sorry
multiple posts bcoz of server problem...sorry
Any way to append this output 09/04/08 at the end of file1.txt in the same column
era
April 23, 2008, 2:50am
13
command which produces output >>file_to_be_appended
i want to add at end of the column and not end of last line
File1.txt
Date (dd/mm)Time Server IP Error Code Output
========================================================================================================
10/04/2008 10:10 ServerA xxx.xxx.xxx.xxx 6 09/04/2008 (grepped from file2.txt)
10/04/2008 10:10 ServerB xxx.xxx.xxx.xxx 9
10/04/2008 10:10 ServerC xxx.xxx.xxx.xxx 16
10/04/2008 10:10 ServerD xxx.xxx.xxx.xxx 60
THANKS to all for the replies
era
April 24, 2008, 3:15am
16
Sarcasm, huh? You are adding a significant new requirement which is hard to adapt into the previous solution, so I would suggest you start a new thread, with all your requirements up front this time. Feel free to include a pointer back to this thread for background.