/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 vote269 views1 answer
How to find the which linux am i using through terminal
Shell/Bash
1 vote283 views2 answers
Check wordpress version cli
Shell/Bash
0 vote293 views1 answer
Ubuntu history select
Shell/Bash
5 votes273 views1 answer
Install dependencies react project material ui
Shell/Bash
0 vote338 views1 answer
Unable to install draw-shape-reactjs
Shell/Bash
0 vote262 views1 answer
Streams in unix
Shell/Bash
0 vote281 views1 answer
How to open sublime in linux
Shell/Bash
0 vote272 views1 answer
Nohup output file
Shell/Bash
9 votes284 views6 answers
Certbot
Shell/Bash
0 vote304 views1 answer
New screen linux
Shell/Bash