Bash replace string

Bash replace substring

echo [string] | sed "s/[original]/[target]/g"

Source: stackoverflow.com

Bash script: replace . with :

#To replace the first occurrence of a pattern with a given string,
#use ${parameter/pattern/string}:

#!/bin/bash
firstString="I love Suzi and Marry"
secondString="Sara"
echo "${firstString/Suzi/$secondString}"    

# prints 'I love Sara and Marry'

#To replace all occurrences, use ${parameter//pattern/string}:

message='The secret code is 12345'
echo "${message//[0-9]/X}"           
# prints 'The secret code is XXXXX'


#(This is documented in the Bash Reference Manual, §3.5.3 "Shell Parameter Expansion".)

Source: stackoverflow.com

HOW TO REPLACE A CHARACTER FROM A STRING IN BASH

string="abc"
final=${string//[a]/b}

echo $final

Source: reactgo.com

Bash replace string

string="stirng" ; echo "${string//ir/ri}"

Bash search and replace text in file

# Basic syntax using awk:
awk '{gsub(regex, substitution_text, $field#); print $0;}' input_file
# Where:
#	- gsub is a function that replaces every regular expression (regex)
#		match with substitution_text. 
#	- $field# is optional but can be used to specify a particular field
#		where gsub should operate. (This is useful if you want to 
#		restrict the substitutions to a specific column)

# Example usage:
awk '{gsub(" ","",$0); print $0;}' input_file
# This replaces every space " " with nothing "", thereby eliminating all
# whitespace from the file

Source: tutorialspoint.com

Bash replace string

#1) Open the file in vi or vim
#2) Run the replacement command in vi (or vim) as follows

# Replace all matching patterns
:s%/PatternToReplace/Replacement

# Replace one matching pattern at a time
:s/PatternToReplace/Replacement

Similar codes

1 vote327 views1 answer
Powerlevel10k
Shell/Bash
8 votes355 views3 answers
Check kubectl version
Shell/Bash
0 vote353 views1 answer
Rstudio arch linux rJava/libs/rJava.so
Shell/Bash
0 vote329 views2 answers
Pushing existing project to github
Shell/Bash
3 votes360 views1 answer
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/focal-security/InRelease Temporary failure resolving 'security.ubuntu.com' W: Some index files failed to download. They have been ignored, or old ones used instead.
Shell/Bash
1 vote318 views4 answers
How to run shell script
Shell/Bash
22 votes354 views2 answers
Apt check if package is installed
Shell/Bash
2 votes322 views2 answers
Symfony skeleton version
Shell/Bash
0 vote337 views1 answer
Ubuntu youtube download playlists
Shell/Bash
0 vote347 views1 answer
Présentation release application engineer
Shell/Bash