if string in string bash code example
Example 1: checking if a substring exists in a string bash
string='Haystack';
if [[ $string =~ "Needle" ]]
then
echo "It's there!"
fi
Example 2: bash substring test
#!/bin/bash
STR='GNU/Linux is an operating system'
SUB='Linux'
if [[ "$STR" =~ .*"$SUB".* ]]; then
echo "It's there."
fi
Example 3: check string in bash
if [ $strval1 == $strval2 ]; then
echo "Strings are equal"
else
echo "Strings are not equal"
fi
if [ $strval1 == "Ubuntu" ]; then
echo "Linux operating system"
else
echo "Windows operating system"
fi
Example 4: bash substring test
#!/bin/bash
STR='GNU/Linux is an operating system'
SUB='Linux'
case $STR in
*"$SUB"*)
echo -n "It's there."
;;
esac