/Shell/Bash/Shell check if string contains substring

Shell check if string contains substring

Checking if a substring exists in a string bash

string='Haystack';

if [[ $string =~ "Needle" ]]
then
   echo "It's there!"
fi

Shell check if string contains substring

# Example usage:
FULLSTRING='Full string to search'
if [[ $FULLSTRING == *"ll str"* ]]; then
	echo "The substring 'll str' is in the full string."
fi

# Example to check for two substrings:
FULLSTRING='Full string to search'
if [[ $FULLSTRING == *"Full"* && $FULLSTRING == *"to"* ]]; then
	echo "The substrings 'Full' and 'to' are in the full string."
fi

# Note, see the following two links for why [[ ]] is used:
https://serverfault.com/questions/52034/what-is-the-difference-between-double-and-single-square-brackets-in-bash
http://mywiki.wooledge.org/BashFAQ/031

Source: stackoverflow.com

Similar codes

0 vote94 views1 answer
Installing preload in ubuntu
Shell/Bash
0 vote101 views1 answer
Ubuntu string variable
Shell/Bash
0 vote105 views2 answers
Codeigniter 4 db seed
Shell/Bash
1 vote101 views1 answer
Ho to go into a docker container
Shell/Bash
0 vote95 views1 answer
Do-release-upgrade
Shell/Bash
0 vote101 views1 answer
Install autoconf macos
Shell/Bash
0 vote99 views1 answer
Error installed react native using npx react native init
Shell/Bash
53 votes112 views6 answers
Docker stop all containers
Shell/Bash
0 vote99 views1 answer
Bin/sh sam: not found
Shell/Bash
0 vote102 views1 answer
Rails add gem to gemfile
Shell/Bash