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

0 vote253 views1 answer
Git rm --cached settings.json
Shell/Bash
0 vote235 views1 answer
How to install deface makers for ubuntu
Shell/Bash
0 vote255 views1 answer
Kill proccess using serial port
Shell/Bash
0 vote224 views1 answer
Bash "=~" example
Shell/Bash
1 vote245 views1 answer
Verify elementary os iso image
Shell/Bash
1 vote274 views1 answer
How to change dotnet version
Shell/Bash
1 vote234 views1 answer
Adoni check migration status
Shell/Bash
1 vote278 views1 answer
Echo variable referenced in variable
Shell/Bash
0 vote257 views1 answer
How to install scrapy-user agents
Shell/Bash
0 vote258 views1 answer
Pull file from specific commit git
Shell/Bash