General :: Shell Script To Extract Single Report By Pattern Then Both Backward And Forward
Feb 18, 2010
I have to admit that I register to LQ after I failed to search for similar solutions.let me see whether I can explain my problem clearly. I need to extract a single report from a big file. The big file looks something like this:
Report for yyyyyy
Your info 999-9999999
End of Report
[code]....
I need to search for a user provided string, say 999-9999999, in the big file. Then I have to extract the single report. My logic is simple,
1) find 999-9999999
2) backward search for "Report for", note down the line number
3) forward search for "End of Report", note down the line number
4) extract the record by using info found from step 2) and 3).
I am trying to do this in bash, with awk and sed (I am new to both).
Suppose you have glibc 2.5 compiled with kernel headers 2.6.18. Is it safe to run this glibc with Linux kernel 2.6.32? Is it safe to run this glibc with Linux kernel 2.6.9?
I have several (vhdl) files containing a pattern with newline characters that I need to replace by another pattern that also contains newline characters.
I start with something like:
Code:
I want to replace it by something like:
Code:
(I need to paste some lines)
As I need to do this (very) often I want to use a shell script.
Just using shell scripting, how can I insert text into the middle of a file name. The file has a predictable pattern, let's say 3 letters and 3 numbers and I want to insert text in the middle of those 2 patterns. Say ABC123 is the file name. As a result, the file name should be ABC.blah.123
I'm new to the shell scripting. can any one help in creating shell script for matching the content of the specific variable with file. it should remove that line from the file if line is containing same value as variable and keep the other content as it is.i used grep -v for accomplishing the same. But grep will remove the pattern which is similar.For eg. Assume file "test" contain datas :aaffif i used grep -v command for the pattern "a" to this file this will remove content "aa" from the file. I want the pattern only "a" should remove from the file, if it is existing. otherwise it should throw alert content not exists.
I have requirement to delete some log files from a directory if a string"deletethisfile" is found.Then restart the application servers.1. Search for the string ?deletethisfile? in server.log file under a directory, If found 2. Stop that particular server.3. Delete the log file 4. Restart the server.
I notice that my bittorrent client is capable of automatically setting up port forwards with my router, and I want to know if I can do the same in a shell script. The reason is, that since my router is stupid and won't let me keep static IP addresses (it seems they forced a DHCP refresh every week to make me want to pay for a more expensive model which doesn't), I need to get my computer to change the port forward to follow my computer's changing internal network IP address. I have a couple of port forward manually entered into my router settings for web interfaces to bittorrent etc, but of course these have a good chance of being invalidated at each DHCP refresh cycle.
I'm running F 13 and today's updates included updates to Xorg, so I logged out and back in to let them take effect. Ever since then, Firefox has been repeatedly crashing, especially on certain sites. I managed to get the crash reporting tool to report it to Bugzilla, but when I try to go back to add the bug report to this post, Firefox crashes, every single time. Has anybody else found this? If somebody can get to bugzilla.redhat.com and find the report (The email address I use there is joe@zeff.us if it helps.) I'd appreciate having it added as a response to this, so that others can find it and,
I just want to know is it possible to extract a single mail from the mail path i.e. /var/mail/root.
for ex. i am having this mail in /var/mail/root.
From root@localhost.localdomain Thu Mar 10 21:47:47 2011 Return-Path: <root@localhost.localdomain> Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by localhost.localdomain (8.13.8/8.13.8) with ESMTP id p2AGHlx4004190 for <root@localhost.localdomain>; Thu, 10 Mar 2011 21:47:47 +0530 [Code]....
I want to go through a log file and find pattern1 and then a pattern2 only after pattern 1.So for example I want to know howManyRecords was in 13:30.I figured I grep for "start time for the job" and then only after that (and before the next occurence of that) grep for "howManyRecords". Is this a sane way?
I need to execute 20 urls in one shell script and display there responses on the console and write on text file too. consider the case when url is not responding.
I am looking for a program to extract a single instrument (guitar) for the purpose of learning to play it. I don't care if it costs $ or not as long as it is native to UBUNTU 9.10 .
I am trying to create a shell script, on taking a input file as parameter, which need to do 3 things
1) create a copy of existing file.
2) add a new line to the copied file.
3) strip off all the absolute paths inside the copied file
The first 2 points are straight forward. but i am finding it difficult to acheive the 3rd point. myself not very good with awk and sed. but gave it a shot in vain. For example, the input script consists of below,
I want to search a file for a particular pattern and if pattern found replace the line with new text. i am using awk 'match($0,"pattern") != 0 {print $0} ' filename to check if the pattern exists.how do i get the line number of the pattern and delete that line and replace the line with my new text?
I have to enhance the behaviour of a backup script written in perl. I don't need to change it, what I need to do is to create a bash script that does some checks like file name and file size, execute the backup script then check if the backup files match the original files.Here's how I try to do it:
- read the files from the original files folder - store them in an array - search in the array the files that have a specific file extension - store the file names that match the search pattern (I know the backup script skips some files so I can hardcode the search pattern) - run the backup script - read the files from the backup folder - store them in an array - compare the original files name and size stored in an array with those from the backup folder - send a report email
I'm looking for a way to insert an SD memory card into my computer and have it copy the files from it (a specific directory) in the background while I view the images from the desktop.
I have a slave node uploading all kinds of backups to my server in the internet. Now I would like to display the actual upload and download rate to this server (not the entire nic-traffic, any protocol) in a small php-page for easy monitoring.I had a look at quite some monitoring tools and the one which kind of offers what I am looking for is iftop with a filter on the IP of my server. As I would like to periodically update a file with the actual rates, an interactive program won't do. A possibility would be to filter the packages myself using but this seems to be quite a long shot.The optimal solution would be a program or script printing out the actual upload to a host specified in the options to STDOUT
Does anyone know of a way to single-step through Bash shell scripts in order to debug? (similar to the way Windows 98 used to let you single-step through autoexec.bat)
I want to write a single shell script that allows me to, once executed from a panel launcher, change the image preview setting between "local files only" and never. Right now i have two tiny scripts, one for local files only and another one for never, that is:
[Code]...
and the other says string "local_only". But that means i need to have two launchers, because i don't know how to write the condition <<when set to never, change it to local only. And is it possible to make a script that also changes the launcher's icon when the preview config is set to one or the other value? That way i'd know what it is set to just by looking at it. It would act as a diagnostic and therapeutic tool XD
I want to cut out part of the 'uptime' output so all it displays is the load average. In the end I want to cut out everything before the word 'load'. I am a total sed newbie and could really use some examples or links. I've googled and haven't found anything useful yet.##edit###I used the 'cut' command- The code was Code:uptime |cut -d, -f 2,3,4,5 |cut 13-
