bash replace substring
echo [string] | sed "s/[original]/[target]/g"bash replace substring
echo [string] | sed "s/[original]/[target]/g"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".)bash replace beginning of string
$ cat shortest.sh
#! /bin/bash
filename="bash.string.txt"
echo ${filename#*.}
echo ${filename%.*}
$ ./shortest.sh
After deletion of shortest match from front: string.txt
After deletion of shortest match from back: bash.stringCopyright © 2021 Codeinu
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