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]...
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].....
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])
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.)
View 4 Replies View RelatedI 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.
I've a big text, and I would like to delete several lines in vim. I was thinking in doing that with marks, but I can't do it. Below it's an example text and I want to delete from <FROM HERE> to <TO HERE>. How can I do that?
[Quote] .....
I am facing some problem regarding deletion of a line from a text file. The file consists of the lines of type which consists of more than 6 occurrences of : character in it. The line should be deleted completely and the line next to it must be shifted up.
View 1 Replies View RelatedIs there anyway to delete certain paragraphs within a text file and then insert the paragraph into another text file.I just cannot figure out how to remove the specific lines from the file and then insert them into another file at a certain line within that new file. Thanks again
View 10 Replies View RelatedI am green on linux script. I would like to perform the following operation:String a: 1,2,3,2,4,How to unique this string to become: 1,2,3,4,?
View 3 Replies View RelatedI recently found myself in possession of a large file (a few million lines in length) of short strings and would like to count the number of lines that are unique to the file. I thought this would be an easy process, but while working on the problem, I encountered the following. Can anyone explain this weird result to me?
Code:
alaric@alaric-laptop:~/Documents/Programming$ grep '^string$' file.txt | uniq | wc -l
1
[code]....
I am trying to delete these symbols "[ ]" from a file but it says string not found. I tried: %s/[//g while editing the file not working also tried sed -e '/[/d' and sed '/]/d' still no job.
View 3 Replies View RelatedI have a data set that takes the form...
0.0 43
12572.9102 80.8521 263.3575 0.0200 12.6358 -86.4942
4.3870e-06 -0.3547
[code]....
After running the following command, I get:
[root@yukiko /]# find / -iname .bashrc
/home/clamav/.bashrc
/home/vpopmail/.bashrc
/etc/skel/.bashrc
/root/.bashrc
But I would like to have a command that prints a specific line by supplying the command with the line number, for example:
[root@yukiko /]# find / -iname .bashrc | getline(2)
/home/vpopmail/.bashrc
Is there such a command on CentOS?
I need to grep for a particular string and if found need to display the line containing that string, the line above that and also the first line of that paragraph.
Can this be done via sed.
Eg, My Paragraphs
OA connectA
Enclosure:
Interconnect Module #6 Status:
Here, if I grep for Critical, it should display the following
Similarly if I grep for Degraded, it should display
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.
what would be the syntax to delete a line containg the word "word" from the file "file" i want to delete the whole line and not only the word...
View 6 Replies View RelatedI'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.
i have a problem about deleting a line from a text file which contains two specific patterns. i am using "sed -i "/$name/ d" peop.txt" but i must use one more variable which is surname.
"
burak:ak:3242:2342:dsa@a.com
gokhan:an:432:4234:da@a.com
"
and this is the code of text file. and the second question when i use "/$name/ d" it deletes not only the names which are macthing with $name but also all words that contain $name. so how can i fix these problems_?
I have two text file named 1.txt & 2.txt.
1. txt contains 5 laks of mobile number.
2. txt has 60 laks of mob no.
Situation is that I want to find and delete numbers in 2.txt which already in 1.txt. Any perl or bash script or any other way to get the work done.
I tried the following:
#! /bin/bash
IFS=$'
' for NAME in $(cat one.txt)
do sed -ie "|^$NAME$|d" two.txt done
echo "***DONE***"
It works well with smaller file but it take very very long time even processing 10 thousand numbers.
I have a set of lines as ahown below:
Leon went to school
Leon came back from school..
Leon had dinner...
I have to replace the line containing "dinner" by a single string LUNCH...
I want to make licencing software. For that first i am retrieving hdd serial no, nic mac address. But the prob is, what if someone changes/replicates its hdd serial no or mac address ? Many softwares are available to do so, in market. How can I find some unique identifiable string for a machine that user can not change?
View 3 Replies View Relatedi jst want to delete a host entry from httpd.conf the entry for lal.com should be deleted!!
View 14 Replies View RelatedI'm trying to get my program to go through the string typed in by the user and strip it of EVERYTHING but the numbers. I can't place my finger on what I'm missing.
Code:
Code: #include<iostream>
#include<string>
using namespace std ;
int main()
[Code].....
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.
View 2 Replies View RelatedI would like to make a shell script that will do the following :- have a web-page using curl- download a picture from the web-page- have a line in the source code of the web page
- catch a string (a link patch) from the line- go to another page of the website from the result of the previous step- repeat all this until there is no match for step 3I know how to :- have the web-page source code using curl (simple, we just have to make "curl- download the picture (as simple as the first step)- have a line in the source code (grep is made for that, isn't it ?)- go to another website from the result of the previous step (it's the same as the first step)But I really don't know how I can do the fourth step of my script.
In facts, I don't know regular expressions and even the shell command that can help me to do this.To be more clear, I would like to store in a variable the string represented by the star (*) in this : <a href="*">Next ></a>
I have a file which contains milion of records. It contains 12 columns seperated by "||" (delimeter).
First two fields contain first name and last name of a person. Now my requirement is to delete all those records from this file for which:
First two fields does not contain any alphabet.
For e.g i have below mentioned records in file:
gaurav||gandhi||123||456||789
#a%bcd||123abc||89|90||91
12345||@@@||89||123||234
***||!!!!||98||76||90
Now, last two lines should be removed from this file since first two fields does not contain any alphabet for these two records.
I have a very, very large log file (360MB) that I'm trying to thin out. As it turns out the majority of this file has entries that aren't necessary so I'm attempting to build a command that will strip these out. The following command works to display only the data that I do not want:
Code:
cat xml_results.log | grep -B 6 -A 5 "YYY ZZZ"
This displays exactly the data I want to delete from the file by displaying the expression and six lines above it and five lines below it. However I'm at a loss as to how to remove this data from the output and display everything else. I looked into the -v option with grep redirecting the output to a new file:
Code:
cat xml_results.log | grep -B 6 -A 5 -v "YYY ZZZ" > xml_filtered_results.log
However it doesn't work, the new file is the same size as the old one. What am I doing wrong? Is there a better method of doing this? I'm a bit out of my element since the method I'd normally use can't handle files of this size.
I've seen a few tutorials that have commands and parameters on multiple line, like the one below:
Code:
chkconfig --levels 235 mysqld on
/etc/init.d/mysqld start
I can copy and paste this in Putty, but what if I want to manually type it? If I press return, the first line gets processed, so how do I insert a new line?
this script returns me :
sed: -e expression #1, char 2: extra characters after command
sed: -e expression #1, char 2: extra characters after command
Code:
#!/bin/bash
while read line
do
sed -i "$line" 'd' test.txt
done < test.txt
i have a file with a lot of lines in it, and iould like to grab just the line that contains a string i've specified in a variable... Let me know if you want a sample of the file.
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