Sponsored Content
Full Discussion: Help with awk Print Substr
Top Forums Shell Programming and Scripting Help with awk Print Substr Post 302772132 by scj2012 on Saturday 23rd of February 2013 11:45:51 AM
Old 02-23-2013
Help with awk Print Substr

Can someone explain to me exactly how it work. I have a line from a script here,

Code:
Processed=$(cat logcheck.txt | /bin/awk '{print substr($19,0,5)}'| sed -e 's/\[//g' | sed -e 's/\].*//g')

This is what is in the logcheck.txt,


Code:
[30376] 2013-02-23 10:00:41 DOW=7 HOUR=10:00 WK=4 DOM=23 MON=2 - Total [98], Disabled [0], Skipped [0], Failed [0], Processed [98]

Please explain the $19, 0, 5.

I'm assuming the $19 is because it's in the 19th position counting left to right? What about the 0 and 5?

Last edited by Scrutinizer; 02-24-2013 at 04:07 AM.. Reason: code tags
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk substr?

Sorry if this has been posted before, I searched but not sure what I really want to do. I have a file with records that show who has logged into my application: 2003-03-14:I:root: Log_mesg: registered servername:userid. (more after this) I want to pull out the userid, date and time into... (2 Replies)
Discussion started by: MizzGail
2 Replies

2. Shell Programming and Scripting

How to use awk substr ?

Hi all, I have a flatfile I would like to get ext = 7950 , how do I do that ? if ($1 == "CTI-ProgramStart") { ext = substr($9,index($9,"Extension")+11,4); But why it is not working ???? Please help . Thanks (1 Reply)
Discussion started by: sabercats
1 Replies

3. UNIX for Dummies Questions & Answers

awk or substr

i have a variable 200612 the last two digits of this variable should be between 1 and 12, it should not be greater than 12 or less than 1 (for ex: 00 or 13,14,15 is not accepted) how do i check for this conditions in a unix shell script. thanks Ram (3 Replies)
Discussion started by: ramky79
3 Replies

4. Shell Programming and Scripting

awk substr

Hi I have multiple files that name begins bidb_yyyymm. (yyyymm = current year month of file creation). What I want to do is look at the files and where yyyymm is older than 1 month I want to remove the file from the server. I was looking at looping through the files and getting the yyyymm... (2 Replies)
Discussion started by: colesga
2 Replies

5. Shell Programming and Scripting

Help with awk and substr

I have the following to find lines matching "COMPLETE" and extract parts of it using substr. sed -n "/COMPLETE/p" 1.txt | awk 'BEGIN { FS = "\" } {printf"%s %s:%s \n", substr($3,17,3),substr($6,4,1), substr($7,4,1)}' | sort | uniq > temp.txt Worked fine until the numbers in 2nd & 3rd substr... (5 Replies)
Discussion started by: zpn
5 Replies

6. Shell Programming and Scripting

awk substr

HI I am using awk and substr function to list out the directory names in the present working directory . I am using below code ls -l | awk '{ if ((substr($1,1,1)) -eq d) {print $9 }}' But the problem is i am getting all the files and directories listed where as the requirement i wrote... (7 Replies)
Discussion started by: prabhu_kumar
7 Replies

7. Shell Programming and Scripting

Substr with awk

Hi to all, I'm here again, cause I need your help to solve another issue for me. I have some files that have this name format: date_filename.csv In my shell I must rename each file removing the date so that the file name is filename.csv To do this I use this command: fnames=`ls ${fname}|... (2 Replies)
Discussion started by: leobdj
2 Replies

8. Shell Programming and Scripting

awk substr

Hello life savers!! Is there any way to use substr in awk command for returning one part of a string from declared start and stop point? I mean I know we have this: substr(string, start, length) Do we have anything like possible to use in awk ? : substr(string, start, stop) ... (9 Replies)
Discussion started by: @man
9 Replies

9. Shell Programming and Scripting

HELP : awk substr

Hi, - In a file test.wmi Col1 | firstName | lastName 4003 | toto_titi_CT- | otot_itit - I want to have only ( colones $7,$13 and $15) with code 4003 and 4002. for colone $13 I want to have the whole name untill _CT- or _GC- 1- I used the command egrep with awk #egrep -i... (2 Replies)
Discussion started by: georg2014
2 Replies

10. Shell Programming and Scripting

awk and substr

Hello All; I have an input file 'abc.txt' with below text: 512345977,213458,100021 512345978,213454,100031 512345979,213452,100051 512345980,213455,100061 512345981,213456,100071 512345982,213456,100091 512345983,213457,100041 512345984,213451,100011 I need to paste the first field... (10 Replies)
Discussion started by: mystition
10 Replies
logcheck-test(1)					      General Commands Manual						  logcheck-test(1)

NAME
logcheck-test - test new logcheck rules easily SYNOPSIS
logcheck-test [-q|-i] [-a|-s|-l FILE] [-e] [-P PREFIX] [-S SUFFIX] RULE logcheck-test [-q|-i] [-a|-s|-l FILE] -r RULEFILE DESCRIPTION
logcheck-test parses a log file for matching lines specified by a single rule or a rule file. If using a single RULE you can set a PREFIX and a SUFFIX to write new rules easily. OPTIONS
-h, --help Show usage information -a, --auth.log Parse /var/log/auth.log for matching lines -s, --syslog Parse /var/log/syslog for matching lines -l, --log-file FILE Parse FILE for matching lines -i, --invert-match Show line that don't match the RULE or the RULEFILE -q, --quiet Suppress rule summary at the end of output -e, --surround-rule Surround RULE with standard prefix and suffix: ^[[:alpha:]]{3} [ :[:digit:]]{11} [._[:alnum:]-]+ RULE$ -P, --append-prefix PREFIX Append PREFIX to rule prefix. Option can be given multiple times -S, --prepend-suffix SUFFIX Prepend SUFFIX to rule suffix. Option can be given multiple times -r, --rule-file RULEFILE Use file RULEFILE for rule input EXAMPLES
With logcheck-test you can easily write and test new rules. Test a single rule against /var/log/syslog: logcheck-test -s "RULE" Test a single rule against ~/log, surround the rule with standard prefix and suffix and append "kernel " to prefix: logcheck-test -l ~/log -e -P "kernel " "RULE" Test the rules in rulefiles/linux/ignore.d.server/kernel against ~/log: logcheck-test -l ~/log -r rulefiles/linux/ignore.d.server/kernel Test which lines the rules in rulefiles/linux/ignore.d.server/kernel doesn't match: logcheck-test -l ~/log -r rulefiles/linux/ignore.d.server/kernel -i EXIT STATUS
On successful matching logcheck-test will complete with exit code 0. An exit code of 1 indicates no successful matching. An exit code greater then 1 indicates an error occurred. Textual errors are written to the standard error stream. SEE ALSO
logcheck(8) AUTHOR
logcheck is developed by Debian logcheck Team at alioth: http://alioth.debian.org/projects/logcheck/. This manual was written by Hannes von Haugwitz <hannes@vonhaugwitz.com>. Feb 19, 2010 logcheck-test(1)
All times are GMT -4. The time now is 01:05 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy