Sponsored Content
Top Forums Shell Programming and Scripting using sed to replace a pattern in list of files Post 302222520 by era on Thursday 7th of August 2008 01:53:52 AM
Old 08-07-2008
Your sample input and output are not coherent. Your sed expression cointains "bc01" even though none of the sample data contains "bc01". Assuming the "01" is an accident or something, the following will do what you describe, i.e. replace "bc" with "xy".

Code:
sed -i 's/bc/xy/g' file_list.log

The -i switch causes sed to perform the replacement in the file, i.e. replacing the file's contents with the new contents. If you have already run the failed command, it will have replaced the file with probably nothing at all, so you will need to run the grep again before you try the new script.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Find a pattern and replace using sed.

Hi I need to help on finding the below pattern using sed <b><a href="/home/document.do?assetkey=x-y-abcde-1&searchclause=photo"> and replace as below in the same line on the index file. <b><a href="/abcde.html"> thx in advance. Mari (5 Replies)
Discussion started by: maridhasan
5 Replies

2. Shell Programming and Scripting

SED Search Pattern and Replace with the Pattern

Hello All, I have a string "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031", and I just want to extract LLSV1, but I dont get the expected result when using the sed command below. # echo "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031" | awk '{print... (4 Replies)
Discussion started by: racbern
4 Replies

3. Shell Programming and Scripting

How to replace the last pattern using sed?

myfile: AAAaaa BBBbbb CCCccc AAAeee DDDddd how to replace the last AAA as EEEEE using sed? like this: AAAaaa BBBbbb CCCccc EEEEEeee DDDddd (14 Replies)
Discussion started by: vistastar
14 Replies

4. Shell Programming and Scripting

sed replace after pattern help needed

Hello, I have a file with multiple lines like this: /film/4295/"_class="titre_article">50/50I would like to change all occurence of / after > with _ to have this: /film/4295/"_class="titre_article">50_50Thank you edit: This could also be change all / starting with the 4th occurrence... (2 Replies)
Discussion started by: patx
2 Replies

5. Shell Programming and Scripting

Replace everything but pattern in a line using sed

I have a file with multiple lines like this: <junk><PATTERN><junk><PATTERN><junk> <junk><PATTERN><junk><PATTERN><junk><PATTERN><junk> Note that 1. There might be variable number occurrences of PATTERN in a line. 2. <> are just placeholders, they do not form part of the pattern. I need... (4 Replies)
Discussion started by: flatley
4 Replies

6. Shell Programming and Scripting

sed command to replace two character pattern with another pattern

Not able to paste my content. Please see the attachment :-( (2 Replies)
Discussion started by: vivek d r
2 Replies

7. Shell Programming and Scripting

sed find/replace a pattern, but not this one..

I've got a file like so: ...lots of lines, etc. push "route 10.8.0.0 255.255.255.0" push "route 192.168.1.123 255.255.255.0" ...lots of lines, etc. I want to sed find/replace the IP address in the second line, whatever it is, with a new IP address, but I don't want to touch the first line.... (5 Replies)
Discussion started by: DaHai
5 Replies

8. Shell Programming and Scripting

sed - Search and replace within pattern

Hi Guys! Unix newbie here! Have a requirement for which I have been scouting the forums for a solution but has been out of luck so far :( I have a file which contains the following:- TEST1|TEST2|"TEST3|1@!2"|TEST5 My sed command should result in either one the following output:-... (6 Replies)
Discussion started by: hishamzz
6 Replies

9. UNIX for Beginners Questions & Answers

sed replace pattern

I have a file with multiple lines, all in the same format. For each line, I need to replace the sequence of digits after the last : with a new value, but keep the single quote at the end of the line. Example: Input: ( two lines of file) Name: 'text1:200/text2:1.2.3.4' Name2:... (19 Replies)
Discussion started by: Beginner101
19 Replies

10. UNIX for Beginners Questions & Answers

Find pattern and replace using sed

Hi, i want to replace the following lines in such a way that if the word merge exists in first column it must replace the 3rd column as M and if parse exists in first column then the last column must P, if neither it must mark it as X. I have tried the solution using awk, but it is saying... (6 Replies)
Discussion started by: charlie87
6 Replies
GREP(1) 						      General Commands Manual							   GREP(1)

NAME
grep - search a file for lines containing a given pattern SYNOPSIS
grep [-elnsv] pattern [file] ... OPTIONS
-e -e pattern is the same as pattern -c Print a count of lines matched -i Ignore case -l Print file names, no lines -n Print line numbers -s Status only, no printed output -v Select lines that do not match EXAMPLES
grep mouse file # Find lines in file containing mouse grep [0-9] file # Print lines containing a digit DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1 occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is returned. SEE ALSO
cgrep(1), fgrep(1), sed(1), awk(9). GREP(1)
All times are GMT -4. The time now is 01:01 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy