/Shell/Bash/Bash check if string contains substring

Bash 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

Bash if substring

string='Hi substring' #To check if string has "Mylong" substring do
if [[ $string == *"substring"* ]]; then
  echo "String has substring"
fi

Bash 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

Bash substring test

#!/bin/bash

STR='GNU/Linux is an operating system'
SUB='Linux'

if grep -q "$SUB" <<< "$STR"; then
  echo "It's there"
fi

Source: linuxize.com

Similar codes

2 votes136 views1 answer
Open android studio project from terminal
Shell/Bash
0 vote143 views1 answer
Ubuntu switch window
Shell/Bash
0 vote141 views1 answer
Install helm on minikube
Shell/Bash
30 votes148 views3 answers
How to bash into docker container
Shell/Bash
0 vote114 views1 answer
Cache Your Login Credentials
Shell/Bash
0 vote123 views1 answer
Bash calculate sum
Shell/Bash
0 vote122 views1 answer
Open calculator from command line MacOS
Shell/Bash
12 votes138 views6 answers
Git rm --cached
Shell/Bash
-1 vote208 views1 answer
????l2tp ubuntu terminal
Shell/Bash
0 vote120 views1 answer
Copy terminal settings ubuntu
Shell/Bash