[\b] backspace |
\b Word Boundary |
\B NOT a Word Boundary |
\cC Control Character C |
\d Matches a digit |
\f Form Feed |
\D Matches a NON digit |
\n New Line |
\s White Space \f\n\r\t\v |
\r Carriage Return |
\S Not a White Space |
\t tab |
\v vertical tab |
\w Any word Character |
\W Not a word Character |
\\ Backslash itself |
\n (n integer) nth () selected as in $n |
\ooctal Char with this octal rep |
\xhex Char with this hex rep |
. Anything |