Sponsored Content
Full Discussion: Help Needed with Grep
Top Forums UNIX for Dummies Questions & Answers Help Needed with Grep Post 302460101 by wthomas on Wednesday 6th of October 2010 05:30:34 AM
Old 10-06-2010
Help Needed with Grep

Hi all,

I need some urgent help with grep.
I'm simply trying to extract the current date from the syslog file, which is "Oct 6" and then grepping this and output the messages to a new log file.
See the below commands and output, even though the log file is created, it is created with all the messages instead of the filtered date "Oct 6", which is cannot extract.
Code:
# todays_date=`tail -1 /var/adm/messages|awk '{print $1, $2}'`
# grep $todays_date /var/adm/messages > syslog.`date +%d%m%y`.log
grep: can't open 6

Thanks and regards,
Wynford

Last edited by Franklin52; 10-06-2010 at 06:35 AM.. Reason: Please use code tags, thank you!
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Help with tail /grep needed

Hello: I'm a very newbee at UNIX/AIX. What i want to do is to tail a file from the bottom until a certain string is found and write all the lines after the found string to another file. I've tried out a lot of combination with tail and grep but doesn't find the good one. Could someone help... (4 Replies)
Discussion started by: Felix2511
4 Replies

2. UNIX for Advanced & Expert Users

Help Needed in Grep Command

Hi i am using grep command to search a string in a file and i am able to find that string in it .. but moving forward once i find the string i need to remove the 5 lines above that and to remove 2 lines below it .. Just wanted to be clear there should be no lines existing which has a string... (7 Replies)
Discussion started by: ranga27
7 Replies

3. UNIX for Dummies Questions & Answers

grep problem with the ^ symbol, help needed please.

Hello I am new to this forum and have been perplexed by this issue for the last hour of my life, I've tried to search everywhere for a solution to my syntax error, but here is my code. grep -wvnf 'noise.dat' sample.out | sort output: 4:Java Swing 5:Swing Java 6:Software Requirements... (2 Replies)
Discussion started by: Gvsumrb
2 Replies

4. Shell Programming and Scripting

help needed in grep and copy

need help in a command. My requirement is that i m grepping the filename based on a pattern in .tar.gz file and then copying the file into some dir below is what exactly i want to achieve step 1: grep -l '30017A6800022D1A' CurrentCollectorMeterReadBackup20081007.tar.gz step 2: file found... (2 Replies)
Discussion started by: ali560045
2 Replies

5. Shell Programming and Scripting

Help Needed with grep & sed

On one of my servers, it appears that a bunch of html files got the following code added to it... I was going to try to remove this line using grep & sed... as sample grep -lr -e 'apples' *.html | xargs sed -i 's/apples/oranges/g' I can get the grep portion to work... grep "<script... (7 Replies)
Discussion started by: djlane
7 Replies

6. UNIX for Dummies Questions & Answers

Grep output help needed

According to linux hardening guide a PATH variable must not contain . or .. so i grep the path variable using. # echo $PATH | grep "." /usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin # echo $PATH | grep ".."... (2 Replies)
Discussion started by: pinga123
2 Replies

7. Shell Programming and Scripting

help needed with using grep in shell programming

Hi, im working on an assignment (airline ticketing system). im kinda having problems with the search function. i want users to be able to search by departure time or by flight. however, my output displays the whole chunk of data instead of what they are supposedly searching for. appreciate if... (1 Reply)
Discussion started by: crazybean
1 Replies

8. UNIX for Advanced & Expert Users

Grep - Explanation needed.

grep -E '^(++){5}5000' <file_name> this command searches value 5000 in only 6th column from provided file where pipe ( | )is delimiter which separate columns... can some one plz explain me what '^(++){5}5000' actually does..? :confused: (1 Reply)
Discussion started by: Killer420
1 Replies

9. Shell Programming and Scripting

Inconsistent `ps -eaf -o args | grep -i sfs_pcard_load_file.ksh | grep -v grep | wc -l`

i have this line of code that looks for the same file if it is currently running and returns the count. `ps -eaf -o args | grep -i sfs_pcard_load_file.ksh | grep -v grep | wc -l` basically it is assigned to a variable ISRUNNING=`ps -eaf -o args | grep -i sfs_pcard_load_file.ksh |... (6 Replies)
Discussion started by: wtolentino
6 Replies

10. Shell Programming and Scripting

Grep command help needed

Hi All, I am looking for grep command to search the following in files of .cpp/.h of a directory and its sub-directories. 1. (char *) 2. (int *) 3. (float *) Like above pattern i need to search in all the files and list. I am using for example... for char*/const char* $egrep -Rwin... (2 Replies)
Discussion started by: vijaya_svk
2 Replies
SVK::Log::Filter::Grep(3)				User Contributed Perl Documentation				 SVK::Log::Filter::Grep(3)

SYNOPSIS
SVK::Log::Filter::Grep - search log messages for a given pattern DESCRIPTION
The Grep filter requires a single Perl pattern (regular expression) as its argument. The pattern is then applied to the svn:log property of each revision it receives. If the pattern matches, the revision is allowed to continue down the pipeline. If the pattern fails to match, the pipeline immediately skips to the next revision. The pattern is applied with the /i modifier (case insensitivity). If you want case-sensitivity or other modifications to the behavior of your pattern, you must use the "(?imsx-imsx)" extended pattern (see "perldoc perlre" for details). For example, to search for log messages that match exactly the characters "foo" you might use svk log --filter "grep (?-i)foo" However, to search for "foo" without regards for case, one might try svk log --filter "grep foo" The result of any capturing parentheses inside the pattern are not available. If demand dictates, the Grep filter could be modified to place the captured value somewhere in the stash for other filters to access. If the pattern contains a pipe character ('|'), it must be escaped by preceding it with a '' character. Otherwise, the portion of the pattern after the pipe character is interpreted as the name of a log filter. STASH
/PROPERTY MODIFICATIONS Grep leaves all properties and the stash intact. perl v5.10.0 2008-08-04 SVK::Log::Filter::Grep(3)
All times are GMT -4. The time now is 10:45 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy