Bash -Substring -Test
#!/bin/bash
STR='GNU/Linux is an operating system'
SUB='Linux'
if [[ "$STR" == *"$SUB"* ]]; then
echo "It's there."
fi
Wide-eyed Wren
#!/bin/bash
STR='GNU/Linux is an operating system'
SUB='Linux'
if [[ "$STR" == *"$SUB"* ]]; then
echo "It's there."
fi
string='Haystack';
if [[ $string =~ "Needle" ]]
then
echo "It's there!"
fi#!/bin/bash
STR='GNU/Linux is an operating system'
SUB='Linux'
if grep -q "$SUB" <<< "$STR"; then
echo "It's there"
fi
#!/bin/bash
STR='GNU/Linux is an operating system'
SUB='Linux'
if [[ "$STR" =~ .*"$SUB".* ]]; then
echo "It's there."
fi
#!/bin/bash
STR='GNU/Linux is an operating system'
SUB='Linux'
case $STR in
*"$SUB"*)
echo -n "It's there."
;;
esac