Questions tagged [replace]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
84
votes
12answers
39k views

vim - how can i do a 'change word' using the current paste buffer

I have some text in my paste buffer, e.g. I did a yw (yank word) and now I have 'foo' in my buffer. I now go to the word 'bar' and I want to replace it with my paste buffer. To replace the text ...
70
votes
5answers
168k views

Remove line containing certain string and the following line

I use this cat foo.txt | sed '/bar/d' to remove lines containing the string bar in the file. I would like however to remove those lines and the line directly after it. Preferably in sed, awk or ...
68
votes
3answers
275k views

How to insert text after a certain string in a file?

Right now I'm using echo "Hello World" >> file.txt to append some text to a file but I also need to add text below a certain string let's say "[option]", is it possible with sed? EG: Input ...
29
votes
5answers
107k views

How to replace the content of a specific column with awk?

Given: there are 40 columns in a record. I want to replace the 35th column so that the 35th column will be replaced with the content of the 35th column and a "$" symbol. What came to mind is something ...
28
votes
3answers
46k views

Replace using VIM, reuse part of the search pattern

I am working with VIm and trying to set up a search and replace command to do some replacements where I can re-use the regular expression that is part of my search string. A simple example would be a ...
27
votes
12answers
44k views

How can I “cat” a file and remove commented lines?

I'd like to know if there is a way that I could cat file like php.ini and remove all lines starting with ; For example, if the file contained this: ; - Show all errors, except for notices ; ;...
24
votes
7answers
9k views

How to replace current word under cursor in Emacs

How do I replace current word under cursor in Emacs? I know that I can use query-replace or replace-string but every time I do so I have to type entire string to be replaced, this is just annoying. ...
23
votes
5answers
16k views

How to report “sed” in-place changes

When using sed to replace strings in-place, is there a way to make it report the changes it does (without relying on a diff of old and new files)? For instance, how can I change the command line ...
22
votes
3answers
25k views

Replace string with contents of a file using sed

I have two different files: File1 /home/user1/ /home/user2/bin /home/user1/a/b/c File2 <TEXT1> <TEXT2> I want to replace the <TEXT1> of File2 with the contents of File1 ...
21
votes
3answers
43k views

Replace text quickly in very large file

I have 25GB text file that needs a string replaced on only a few lines. I can use sed successfully but it takes a really long time to run. sed -i 's|old text|new text|g' gigantic_file.sql Is there a ...
18
votes
1answer
16k views

using sed with ampersand (&)

I'm using sed to find and replace patterns within SAS files I have rather than changing them individually. The problem is I am trying to replace macro variables and when I use the ampersand it is not ...
11
votes
6answers
3k views

In `sed` how can I put one “&” between characters in a string?

Can sed make something like : 12345 become : 1&2&3&4&5 ?
11
votes
2answers
34k views

Fastest & Most Core way to replace “\r\n” with “\n” in a file?

I suppose tr is a more core method and thus probably a faster way to replace things within a given file. However tr can only replace equal amounts of characters. meaning... 2 characters can only be ...
11
votes
3answers
17k views

Vim :s replace first N < g occurrences on a line

In vim, I sometimes have occasion to replace the first few occurrences of a match on a line, but not every one like g would. e.g.: a a a a a to b b b a a I know I could use :s/a/b/[enter]:[up][...
11
votes
3answers
15k views

Replace multiple strings in a single pass

I'm looking for a way to replace placeholder strings in a template file with concrete values, with common Unix tools (bash, sed, awk, maybe perl). It is important that the replacement is done in a ...
10
votes
5answers
35k views

Sed : Replace pattern on every second newline?

Is there a way to tell sed to replace the pattern on every second occurrence? Or at least on every second line? (Sure it's possible with a script, but I was asking myself if sed can do it to). Edit ...
10
votes
4answers
64k views

How can I replace text after a specific word using sed?

I have a file named .ignore. In need to replace the projdir. For example: ignore \..* ignore README projdir Snake I need to replace Snake with, for example, "PacMan". I read the man page, but I have ...
10
votes
2answers
2k views

Case-preserving search and replace in vim?

In vim, I know I can search with or without case sensitivity. But if I want to search for a string in either upper or lower case, and replace it with a replacement of the same case, is that possible ...
9
votes
2answers
7k views

Merge folders and replace files using CLI

I want to update some forum software and I'd like to test the upgrade process using CLI as a learning possibility. How do I merge contents of a folder into another folder and replace files?
9
votes
2answers
9k views

Remove unknown unicode character from textfiles - sed, other bash/shell methods

I need to search and replace all occurences of an unknown character in some files having the same name. Opening such files with vi, I read <91> code for that character. Opening them with nano, I ...
8
votes
6answers
22k views

Replace all values in one column to 1

I have multiple text files containing 12 lines and 3 columns. Example: 2 6 0.74 42 6 0.58 80 6 0 112 6 0.24 132 6 1 216 6 0.7 342 6 ...
8
votes
3answers
2k views

How to remove a specific character in a string but only if there are no numbers in that line in Linux

I've been stumped with this seemingly simple-to-fix problem.. well, for a while. Here's example output from the file I need to edit: $cat file George Washington Geneva Convention 123,281,029 USD 342,...
8
votes
4answers
463 views

Rename multiple files with 2 conditions/replacements in one line?

I'm trying to rename a few images: IMG_1.JPG IMG_2.JPG IMG_3.JPG I want to replace IMG with img and .JPG with .jpg - I know how to do the second part: $ rename 's/\.JPG$/\.jpg/' *.JPG My problem ...
8
votes
3answers
7k views

How does one find and replace text in all open files with kate?

How does one find and replace text in all open files with kate?
8
votes
1answer
2k views

Emacs simple arithmetics in query replace

Is it possible to do the following in emacs: Query replace all numbers in a region by the number +n, for example if you have: 12 and 7 are nice numbers let n be 3, then it should transform to 15 ...
8
votes
2answers
4k views

How could I use Bash to find 2 bytes in a binary file, increase their values, and replace?

I'm trying to find two bytes inside binary file, then increase value of those two bytes and replace them inside file. Those two bytes are on positions 0x82-0x83. For now on I have successfully ...
7
votes
1answer
304 views

Is it possible to replace duplicates of a character with one character using tr

I'm trying to take all occurrences of # and if they are consecutive replace them with just one #. e.g. ab ### cde fghi## jklm would become: ab # cde, fghi# jklm My initial goal was to replace ...
7
votes
2answers
2k views

shell script/utility replace 2 byte unicode in binary file

I have many large Unicode files. I would like to replace each Unicode byte pair with a new Unicode byte pair. For example, the original file contains "C3 B9 C3 AB C3 B8 C3 B0" and I would like to ...
6
votes
1answer
17k views

Editing a child JSON element value with jq

I'm trying to use jq in order to change a child's value. For instance, I want to change the value of "test2" from ["yo", "bye"] to ["hi"]. { "title": "hello", "body": { "test1": 123, ...
6
votes
4answers
2k views

sed how to substitute when string has “http://” in it?

I have a file xx that has the following contents: @base_url = "http://dmstaffing-stage.herokuapp.com/" I want to use sed to eliminate this line (replace with nothing). I have used this sed ...
6
votes
4answers
152 views

Replace a line with the line that I have in the buffer in vi

I cc or dd to copy a line into my paste buffer. Then I go to a new location. I want to replace a line that I see. So I type p Down dd. Is there an easier way (fewer keystrokes)?
6
votes
5answers
20k views

How to grep, then search and replace on the output?

I have some output from iconv, e.g. $ iconv -l | grep ISO | head -5 CSISO4UNITEDKINGDOM// CSISO10SWEDISH// CSISO11SWEDISHFORNAMES// CSISO14JISC6220RO// CSISO15ITALIAN// durrantm:~ How can I change ...
6
votes
5answers
22k views

Use sed to find whole word and replace

I have the following block of text in a file: test3.legacy test4.legacy test3 test3.kami I only want to search for test3 as a whole and replace it with nothing. Unfortunately, all my attempts have ...
6
votes
1answer
1k views

A posix-compliant function for replace text with parameters and regex

I'm making a function with a replacement of strings using regular expressions in a secure way, without possibility to inject characters, and without renouncing the use of regular expressions: #! /bin/...
5
votes
4answers
802 views

How to replace all the first occurences in matched lines with incremental number?

I have a file like this ... 1562 first part 1563 H col3 H col4 1564 H col3 H col4 ... 3241 H col3 H col4 3242 third part ... I want to replace only the first H in every line to H#, with #...
5
votes
3answers
2k views

Search and replace strings that are not substrings of other strings

I have a list of replacements like so: search_and -> replace big_boy -> bb little_boy -> lb good_dog -> gd ... I need to make replacements for the above, but at the same time avoid ...
5
votes
4answers
2k views

Replace whole line in a file from command-line

I have a text file which has some contents similar to this: # General information about the project. project = u'Py6S' copyright = u'2012, Robin Wilson' # The version info for the project you're ...
5
votes
5answers
4k views

How to replace a list of placeholders in a text file?

I have a text (configuration) file, but the program that reads the file unfortunately doesn't allow using any kind of variables. So I'd like to use a preprocessor that replaces a set of placeholders ...
5
votes
2answers
2k views

Replace very long string in files recursively

I have a very long and complex string in many files and I want to remove/replace it recursively. The string contains many slashes, backslashes and spaces and any kind of special signs. How do I do ...
5
votes
1answer
1k views

Conditional search and replace on a line in vim?

Let' say I want to comment and uncomment a line. I know I can :s!^!//! and then :s!^//!! Now what if I want this as an one-liner? Basically, if a line starts with // then remove it, else add it. ...
5
votes
2answers
5k views

How to search and replace strings matching a replacement list for multiple files

I have a file, say map.txt, containing a list of search strings and corresponding replacements: search -> replacement bigBone -> bb fishMarket -> fm dogCollar -> dc ... I need to perform ...
5
votes
2answers
8k views

use awk to replace parentheses?

How can I use awk to replace the parentheses in these 2 scenarios? Change empty parens to the word "None" 192.168.0.24,Up,() Remove parens to only host.domain.com is left 192.168.0.25,Up,(host....
5
votes
3answers
316 views

How to insert text after the last configuration line?

I have to insert a line into a configuration files automatically, but with the added caveat that it should be inserted before a multi-line footer comment and any preceding empty or whitespace-only ...
4
votes
3answers
923 views

how to emulate “replace a b b a” with a sed?

I am trying to emulate a replace command which swaps two characters, with a sed script, but the obvious choice: sed -e 's/a/b/g' -e 's/b/a/g' does no work. Can you point me how to do it correctly?
4
votes
2answers
422 views

Why does this add spaces? echo “x ax” | sed 's/x\s*/x /'

I want to find a x, and replace the 0 or more following spaces (\s*) with just a single space. echo "x ax" | sed 's/x\s*/x /' For some reason, instead of replacing the spaces with the single space, ...
4
votes
4answers
4k views

Btrfs RAID1: How to replace a disk drive that is physically no more there?

I have a btrfs RAID1 system with the following state: # btrfs filesystem show Label: none uuid: 975bdbb3-9a9c-4a72-ad67-6cda545fda5e Total devices 2 FS bytes used 1.65TiB devid 1 ...
4
votes
3answers
363 views

Convert genotypes to 0/1

I have a file that looks like: 1 rs6687776 1020428 T C T C T C C C T C C C T C The 4th and 5th column are the two different possible alleles at that ...
4
votes
3answers
837 views

Ignore part of the string with sed

so, I have files with text formatted like this: untranslatedString : "translated string", and I need to replace characters in "translated string" part with their Cyrillic representation. I use ...
4
votes
4answers
6k views

Substitute placeholders in template

Say I have a shell configuration file config like this: HOST=localhost PORT=8080 Now I have a template template like this: The host is <%= @HOST %> The port is <%= @PORT %> How do I ...
4
votes
2answers
6k views

Replacing identical NIC cards creates eth1 instead of using eth0 in Ubuntu

I changed out a NIC card that was the exact same make and model. The setup process for Ubuntu 11.04 was very seemless and easy so I figured it would be smart enough to setup up the replacement card. ...