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 vote194 views1 answer
Snap d install shotcut
Shell/Bash
6 votes192 views3 answers
How to shutdown port in windows
Shell/Bash
0 vote203 views1 answer
Mac install vagrant
Shell/Bash
8 votes205 views1 answer
Chrome import passwords
Shell/Bash
15 votes206 views2 answers
Install discord
Shell/Bash
1 vote185 views1 answer
How to install g++ in fedora
Shell/Bash
9 votes248 views2 answers
Linux extract tgz
Shell/Bash
3 votes180 views1 answer
Restart xampp linux
Shell/Bash
0 vote244 views1 answer
On-root/non-service/non-daemon users
Shell/Bash
0 vote199 views1 answer
Failed to open stream: No space left on device linode
Shell/Bash