Tag: sed

Skipping a part of a line using sed

I have a file with content like so – @1: 00001109 Each line is of the same format. I want the final output to be @1: 00 00 11 09. I used command in sed to introduce a space every 2 characters – sed ‘s/.{2}/& /g’. But that will give me spaces in the part before the colon too which

How to add characters in word and replace it using sed command in linux

awk bash linux sed

I have one requirement. I have one text file named as a.txt, which is having list of words – Now I have one another file named as b.txt , which is having content as Like this n of lines are there with different different words. Then I am writing script file – So after running script the output file of

Deleting the first row and replacing the first column data with the given data

awk for-loop linux sed shell

I have the directories name like folder1,folder2,folder3….folder10. Inside each directory there are many text files with different names.And each text files contain a text row on the top and two columns of data that looks like as below Then what i want to do is== at first i want to remove completely the first row of all text files present

Remove ” and n using sed

awk linux regex sed

How to replace the below text using sed or in any other method. I need to replace the above to be like Answer A or . needs to be escaped in regex pattern. You may use this sed: You may consider this awk to remove ” and n characters anywhere in the file:

how to edit a line having IPv4 address using sed command

linux regex sed

I need to modify an ntp configuration file by adding some options to the line containing Ip addresses. I have been trying it for so long using sed command, but no able to modify the line unless i don’t know the IP addresses. Let say, i have few lines as, server 172.0.0.1 server 10.0.0.1 I need to add iburst option

How do i extract some particular words from each line?

awk grep linux regex sed

The text file has many lines of these sort , i want to extract the words after /videos till .mp4 and the very last number ( shown in bold ) and output each filtered line in a separate file Lets say for example the text file content is .. The output should be Answer You may try the below regex:

list tables from mysql dump file with sed

linux regex sed

I have situation where I need to extract tables list from mysql dump file. I tried that with sed but got this error what did I miss in my regexp? Answer Since you are using Linux, and you need to get all strings inside the first backticks after DROP TABLE, I’d suggest using grep with a PCRE regex like See

Changing contents of a tsx file through shell script

bash linux sed sh shell

I have a requirement to change the contents of config.tsx file that contains values like: I want to change this content using a shell script and save the file. Changed content can look like: How can I do this? Answer This should work: The -i option will edit the file in place. If you first want to try the command

How to read a variable from file, modify and safe it to an other variale

bash file linux sed shell

What I want: There is a file /scripts/backup/config.cfg which contains variables. In my specific case the important ones are: Then there is a script /scripts/backup/performBackup.sh For a specific reason I want a part of the script do the following operations: read the value of the variable ROOTLOCATION add a (“/” and) timestamp (Date&Time) safe the new created value to BACKUPLOCATION

Deleting strings from text file

awk file linux sed string

I have a txt file, like this: I only want to keep: I tried: It works, but can’t get rid of the date. Answer Although you might prefer to get rid of more whitespace with: