Match a String of Characters (+) (*) ( { n} )
You can match a string of one or more characters by adding a plus (+) after the character. You can match a string of zero or more characters by adding an asterisk (*) after the character. You can match a string of a specified number of characters by adding curly brackets enclosing a number ({ n} ) after the character. You can specify a range of repetitions with two numbers enclosed in curly brackets. Regular Expression | Match | Not a Match |
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ab+c | abc, abbbc, abbbbc | ac, axc | ab*c | ac, abc, abbbc | axc | ab{ 3} c | abbbc | abc, abbc, abbbbbc | ab(2,3} c | abbc, abbbc | ac, abc, abbbbbc | a[bc]+d | abd, acccd, abccbd | ad, axd | a(bc)*d | ad, abcd, abcbcbcd | abd, acd, axd | ^.+$ | a, aaa (any line with one or more characters in it) | (a blank line) | |