/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

2 votes267 views1 answer
Almofire pod install
Shell/Bash
3 votes283 views1 answer
How to prevent conda activated everytime terminal open linux
Shell/Bash
3 votes297 views5 answers
Zsh command not found nvm mac
Shell/Bash
0 vote277 views1 answer
Replace hashes space vi
Shell/Bash
0 vote291 views1 answer
Cli zip
Shell/Bash
0 vote270 views1 answer
Docker splunk run
Shell/Bash
0 vote287 views1 answer
Blocked myself from ssh
Shell/Bash
3 votes269 views2 answers
Install matlab on ubuntu 18.04
Shell/Bash
0 vote287 views1 answer
Git push with gpg key
Shell/Bash
8 votes275 views3 answers
Bash replace beginning of string
Shell/Bash