regex find lines containing two strings
^(?=.*\bstring1\b)(?=.*\bstring2\b).*$
regex find lines containing two strings
^(?=.*\bstring1\b)(?=.*\bstring2\b).*$
regex match two characters
echo %H#E%L#L%O! | sed 's/[#%]//g' #replaces every appearance of any of
two characters # and %
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