Server :: Find A String In A File And Delete That Line As Well As X Lines After?

Jun 24, 2010

I need to find a string in a file ... then delete the line it is on, as well as the next 6 lines. Or, delete the line the string is on and all subsequent lines until the search finds the character "["

example:

filename = test.txt

contents:
[foo]
test>test
test>test
test>test

[Code]....

so, in this example. I'd like to search the file for string 'foo' and delete all lines from that line until [bar] (not deleting the line with [bar])

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General :: Delete All Lines In A File Which Consists Of Particular String?

Mar 21, 2011

i am having following lines in a file called test.

subscribe parser for dinesh
extend size for dinesh
subscribe parser for anish
unsubscribe parser for dinesh
extend size for arvind

I want to delete all lines which contains the string "dinesh". Is it possible.

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Programming :: Delete Line In File Matching String?

Jan 26, 2010

Quote:Originally Posted by topcatI would like to know how i can write a shell script to delete a line if a particular pattern exists?E.g. I have a text file with multiple lines. Say 1000s. in the following pattern.

username@email.com:149.0.3.4:1
username1@email.com:149.0.3.4:1
username1@email.net:149.0.3.4:1
username1@email.edu:149.0.3.4:1

If the patternusername@email.com exists then the line "username@email.com:149.0.3.4:1 should be deleted from the file.I have a very similar question but I need to delete one line in a file which matches one very precise instance of a string only. Let's assume I have a file composed of thousands of lines and let's call the file chap-secrets. Let's take the following sample entries:

Code:
#USERNAME SERVER PASSWORD IP
pp pptpd blahblah *

[code]....

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General :: Delete All Lines Containing A String, Plus 4 Lines Below It?

Jan 26, 2010

I've come across an unusual requirement for a service in my Ubuntu system.Simply put, I need to find a way to search for all instances of a term in a file, delete lines containing containing that term, and delete four lines below each instance of that term. ither that, or copy the entirety of a file to a new file and skip over all lines containing the term plus four below it.This sounds kinda weird, I know. Without going too far into detail, I either have to change the logfile format for a server I'm running which is a huge pain in the butt, or I can just run a script to edit an HTML report generated from said logs. (Said report is really just for managers to peruse, and I like my log format, so I'm pursuing option 2.)

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Ubuntu :: Using Sed Or Awk To Find And Delete Lines In A File?

Dec 21, 2010

I have a bunch of text files, all of them have a .txt extension. They are all located in subfolders of the /MyTextFiles folder (but could be anywhere, no idea what depth). If any line in any of the text files has the word "hello" I want to delete that entire line. I know sed and awk are made for this problem but I can't seem to get the syntax correct.

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Programming :: Find String In Text File And Add Something To That Line

May 26, 2011

I want to know how can I add something to a specific line.. the output would be something like:
abc
def 123
ghi

Search for string "def" and add something to that line.

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General :: Grep Lines Containing A Certain String PLUS The Line Following That Line?

Sep 1, 2009

I have a dataset (see example below) that I would like to go through and copy all lines containing a certain string ("LGIG") plus the line immediately following that line to a new file. I have no problem grepping lines containing the string LGIG but I'm lost how to translate that to line number and shift up one line number for each instance of that string.

Example input file:

[code].....

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General :: Deleting First Line With Unique String Then All Subsequent Lines Thereafter?

Jan 20, 2011

I am doing molecular dynamics where I have to edit files. I have looked at tutorials for grep and sed but can't find my solution. The files produced in my simulations look something like this:

ATOM 1825 NE2 GLN 112 113.646 27.895 14.456
ATOM 1826 HE21 GLN 112 114.020 26.957 14.490
ATOM 1827 HE22 GLN 112 112.649 28.039 14.388

[code]...

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General :: Delete Duplicate Lines Without Removing First Instance Of That Line?

Feb 7, 2011

I have a file "test.txt" with following data

#1
aaa
#2
bbb
#3
aaa
#4
ddd

I wanted it to be displayed as

#1
aaa
#2
bbb
#4
ddd

I used awk "'!x[$0]++' test.txt > file.new"
,but it deleted #1 also.I tried using uniq command but i didn't work.
Can anyone Please let me know is there any way to do this using shell script.

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Programming :: Sed: Find Pattern And Delete 5 Lines After It?

Mar 23, 2010

I am trying to edit a print file.

For every occurence of the ^L form feed character I need to remove 5 blank lines after it but still keep the ^L.

I am a rare user of sed and am ok with the basics but am struggling with this.

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Software :: Find And Delete String In Text Files?

Mar 6, 2010

I have a series of file names in a text file that I generated by running
Code:

bash-4.1# ls -alt *.txz | awk '{print $8}'
and then copy pasting the output. All of these file names have the version number
Quote:
-4.4.1-x86_64-1alien.txz

I just want a method to remove that version number from all the filenames so that I can then add all the packages without version numbers to a blacklist file.

I've tried kwrite and mousepad and both have a search feature and a replace feature but I haven't been able to just have the text removed successfully.

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Programming :: Use Sed To Find String Pattern And Delete Subsequent Characters?

May 3, 2010

I have a file with a number of strings like the ones below

string1#m1asdfe23easdf23wefas
string2#mfaaeb2vr1rhserh
anotherstring#ji89ensrsegr
anotherone#m1ynmdt324nsdt

I'm trying to delete everything after #** so that

string1#maasdfeaveasdfawefas
string2#mfaaebvrserhserh
becomes
string1#ma
string2#mf

tried sed 's/#..*//g' but as you all will know it returns string1, string2 etc.

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Programming :: Sed Delete Lines From File One If Regexp Are Listed In File Two?

Sep 17, 2009

I am trying to delete lines of a file if they contain text that is present on another file. For example

> cat one.txt:

a
b
c
d

[code]....

I get the following output:

> ./test.sh one.txt two.txt
a
b
d
e

[code]....

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General :: Delete Last 6 Lines Of File With Sed

Jun 5, 2011

looking to delete the last 6 lines of a file with sed. figured out how to delete the last line..but i want the last six.

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Programming :: Perl - Delete Line From Text File With Duplicate Match At Beginning Of Line

Apr 1, 2009

Was wondering if any perl guru's could help me with a quick log file adjustment. I have a text file that looks like so (tabs and newlines are revealed so you can see what separates the data):

There are maybe 100 lines of text in this file at any given time. I need to delete all duplicate lines only looking at the first bit of text prior to the first tab. It doesn't matter which one gets deleted as long as there are no two lines that begin with that same text at the beginning before the first tab. So in this example, either the fist line "1234" or the last line "1234" would need to be deleted. I already have code in my script that opens the files - I just need the code to read the text into an array and the part that would find matches based on the above criteria, and make the deletions.

If it would be easier, I can even do a system call and use SED (v4.1.5) and/or AWK (3.1.5) instead.

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General :: Copy Some Lines In A File And Delete These After?

Jul 20, 2010

I have a file that contains 100 ligns, i need to write a script that read 70 lignes and redirect those 70 ligns to another files and these 70ligns have to be erased in the first file

when i write this command
head -70 somefile.txt>test.txt
or

sed -n 70p somefile.txt>test.txt

i have these 70 lines in the text.txt files
but these 70 lines have to be deleted inthe first file somefile.txt

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General :: Delete Lines From File By Their's Length

Apr 27, 2010

i've got a file with sorted words - one on each line.How could it be possible to delete thouse lines that have words of length 1 or 2 (1-2 letters). I guess a good way it will be with AWK, n its fuction length(), but getting it, i dont know how to delete those very lines.

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Server :: Remove Dynamic String Across Multiple Lines And Files?

May 13, 2011

My server was hit with an injection script which has placed code across many of my clients files. I need a script that can remove a block of php code that spans multiple lines, multiple directories/files and is dynamic, meaning that part of the code changes. I think using find/sed is what I need but cannot seem to figure out how to get it to work.The following is the script that is being injected everywhere. The catch is that they have generated dynamic code at the start/end of the script. (I have commented the parts that are dynamically changing on EVERY instance).PLEASE NOTE: Directly following this script is the start of a valid php script that I do not want to delete.

<?php
//{{65281980 - DYNAMIC!!
GLOBAL $alreadyxxx;

[code]...

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Software :: Delete Top Lines Of A Text File Until A Word Is Met?

Jul 7, 2011

I need to chop of the top 30ish lines of several log files until a line starting with "Initialization completed."The trouble is that it's not always the same amount of lines that need to be deleted, and they don't always contain the same information, which is why I would need to delete everything priorhe line starting with "Initialization completed."Right now I have a little script I wrote based on looping each file through several "grep -v" commands with each known pattern of lines I want to ignore, but it is tedious and I have to inspect each file afterwards to make sure nothing is left from above "Initialization completed

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Programming :: Delete Multiple Lines In A File Using Perl?

Apr 15, 2011

I have a file looks like the following:

digraph topology
{
"192.168.3.254" -> "10.1.1.11"[label="1.000", style=solid];
"192.168.3.254" -> "10.1.1.12"[label="1.000", style=solid];

[code]...

Order of these lines are random... So I cannot delete line #19, for example... And you can see that top four lines I want to delete are pairs. So there might be some clever way to detect the lines, if a line has both "1.9" and "1.11", then delete the line... I am new to perl language. The following is the code I have now... I think I just need to write some code inside the while loop checking if I want to delete the line $dotline before I write to a NEW file.

Code:

#!/usr/bin/perl -w
$TOPPATH = "/tmp";
$NAME = "topology";
$FILENAME = "$TOPPATH/$NAME.dot";

[code]....

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Programming :: Sed/awk: Three Consecutive Blank Lines In A File - How To Delete Two Of Them

Jun 16, 2010

I have a file with three consecutive blank lines. I want to delete two and keep one.Also, if anyone could direct me towards a guide on regular expressions particularly as they apply to sed, I would be grateful. I am having a hell of a time figuring out the syntax.

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Programming :: Search File By Pattern And Then Delete Corresponding Lines In Shell?

Sep 16, 2010

I have such a file(test.txt):

abc 123 456
abc 256 145
axd 125 225

[code]...

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Programming :: Insert Each Line Of One File To The Another File After Certain Lines?

Jul 2, 2010

i have two files with thousands of line, I am trying to combine these two files but i want to insert each line of one file to the another file after certain lines. I am using awk with the following command but it does not work.cat file1 | awk ' { print $0; if (NR%3004==0) {print "file2"}}' > outputfile

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General :: Add A Line In A File Before The Last Two Lines?

Aug 2, 2010

I need to add a line in a file before the last two lines using a script using standard linux editors like sed but i can't figure it out.

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Programming :: Perl Find File And Then Replace String In File

Jul 28, 2009

I have script that I'm working on that updates a username in all the files that are called blah.inc for my framework. since i host a bunch of these web apps i need to do it to all of them. so I need to figure out how to update these files automagically with out me watching it to call vim every time. heres what I have so far

Code:

This finds the files but now i need to figure out how to do s/bob/fred/g on those files.

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General :: Replace Nth Occurence Of String In Each Line Of A Text File?

May 20, 2010

I have large text files with space delimited strings (2-5). The strings can contain "'" or "-". I'd like to replace say the second space with a pipe. What's the best way to go?
Using sed I was thinking of this:

sed -r 's/(^[a-z'-]+ [a-z'-]+) /1|/' filename.txt

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Programming :: Adding Number And String To Each Line In Data File

Apr 10, 2010

I have a very large data file, with 3 numbers in each line, ex. 3 4 5 ; 6 7 8.I want to add two numbers (0 and 1) at the end of every line, and a string at the beginning of the line. Does anyone know a efficient way to do so?

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Ubuntu :: Find File Name And File Path From A String?

Feb 28, 2010

How to find filename and file path from a string

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Programming :: Pthread - Take String From The Command Line And Creates A Thread To Print The String

May 3, 2011

I've been trying to understand pthread in C a little better. So I made a simple program that takes in a string from the command line and creates a thread to print the string. I've looked online and copied the basic concepts but there are something things I'm confused about. The programs works just fine, but I have questions. Here's what I have so far.

[Code]....

One thing I'd like to know is why the 3rd argument in the pthread_create function which is my SendMessage function needs to be typecasted to a void pointer and then send the address of the function. Also as for the 4th argument, I would see typecasting to void pointer in some of the pthread examples I saw online, but in my case I'm passing a char pointer, would this be correct? In which case would I ever want to pass a void pointer?

Do I need a pthread_exit(NULL) in my main and in the SendMessage function? If so, why? I added the sleep() function so that I could let the pthread_exit function in my SendMessage function execute first. I simply saw that the online examples on pthread had pthread_exit() in both locations.

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Red Hat / Fedora :: Delete The First Line Of Log File ?

Mar 3, 2010

I have a log file /var/log/messages. Now all i want is to delete the first line through script without disturbing provisioning the file.

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