/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

3 votes340 views3 answers
How to uninstall react native cli globally
Shell/Bash
1 vote323 views1 answer
Bash download a file
Shell/Bash
34 votes311 views6 answers
Install tkinter
Shell/Bash
1 vote323 views2 answers
Clear history linux
Shell/Bash
0 vote305 views1 answer
Gatsby-plugin-typography
Shell/Bash
2 votes327 views2 answers
Grep folder for text
Shell/Bash
1 vote321 views1 answer
Ionic capcitor v3 geolocation install
Shell/Bash
0 vote346 views1 answer
Why doesn't my applications turn in spotlight search
Shell/Bash
0 vote315 views2 answers
Install tomcat on mac brew
Shell/Bash
3 votes303 views1 answer
Hello world powershell
Shell/Bash