Specify the Location (^ ) ($)
You can specify that a string only matches when it occurs at the beginning of a line with circumflex (^). You can specify that a string only matches when it occurs at the end of a line with $. Regular Expression | Match | Not a Match |
|---|
^Sir | Sir, Sir John | Dear Sir, | John$ | John, Sir John | John Smith | ^Sir$ | Sir | Dear Sir, Sir John | ^.$ | a (any line with only one character) | aa (any line with more or less than one character) | ^?$ | a (any line with zero or one character) | aa (any line with more than one character) | ^$ | (any blank line) | (any nonblank line) | |