check if variable contains string bash
STRING='Hello world'
if [[ $STRING =~ "Hello" ]] ; then echo "It's here" ; ficheck if variable contains string bash
STRING='Hello world'
if [[ $STRING =~ "Hello" ]] ; then echo "It's here" ; fichecking if a substring exists in a string bash
string='Haystack';
if [[ $string =~ "Needle" ]]
then
echo "It's there!"
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