/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

1 vote254 views1 answer
Kill locked window ubunut
Shell/Bash
0 vote241 views1 answer
Express-rate-limit github
Shell/Bash
1 vote231 views2 answers
Pandas documentation
Shell/Bash
1 vote262 views1 answer
Cordova sqlite storage plugin android 11
Shell/Bash
11 votes257 views3 answers
Appimage install kali linux
Shell/Bash
0 vote243 views1 answer
How to fix expired key when apt update
Shell/Bash
30 votes251 views3 answers
Linux c compiler online
Shell/Bash
3 votes272 views4 answers
How to set environment variable in linux permanently
Shell/Bash
12 votes308 views3 answers
Install nodejs debian 10
Shell/Bash
1 vote240 views1 answer
Delete github credentials in windows
Shell/Bash