SHELL

HOW TO REPLACE A CHARACTER FROM A STRING IN BASH

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

echo $final

bash replace string

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

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

replace character with another from input bash

# echo "hello world" | tr " " .
hello.world