Filter match in line sed

For using match in sed replacement, just border it with '\(' and '\)':
echo Before123 | sed 's/Before\([0-9]*\)/\1After/g'
123After	# number is matched withtin '\( \)' and replaced in '\1'
Example with 2 match replacements
echo a_b | sed 's/\(^.*\)_\(.*$\)/first is \1 and \2 is after/g'

Similar codes

44 votes312 views6 answers
Install sklearn
Shell/Bash
0 vote315 views1 answer
Shell export
Shell/Bash
2 votes320 views1 answer
Github pages with favicon
Shell/Bash
0 vote302 views2 answers
Could not find tools.jar. please check that /library/internet plug-ins/javaappletplugin.plugin/contents/home contains a valid jdk installation.
Shell/Bash
0 vote327 views1 answer
Gem::LoadError : "ed25519 is not part of the bundle. Add it to your Gemfile."
Shell/Bash
0 vote323 views2 answers
Install docker EE without internet
Shell/Bash
0 vote323 views1 answer
Pull request without forking?
Shell/Bash
0 vote319 views1 answer
Ssh pem
Shell/Bash
9 votes327 views1 answer
Update submodules
Shell/Bash
0 vote335 views3 answers
Vscodium download ubuntu
Shell/Bash