List of escape characters used in PERL:

• \a Alarm/bell
• \b Backspace
• \B Non-word boundary
• \c[ control character
• \d digit
• \D Nondigits
• \e Escape
• \E Ends upper or lower case conversion started by \L or \U
• \f Formfeed
• \l Next character is translated to lower case
• \L Next characters are converted to lower case until \E
• \n Newline
• \r Carriage return
• \s Whitespace character (blank, tabulator)
• \S Nonwhitespace character
• \t Tabulator
• \u Next character is translated to upper case
• \U Next characters are converted to upper case until \E
• \w Alphanumeric character
• \xfa Hexadezimal number
• \034 Octal Character
• \\ Backslash
• \" Double quote
• ^ Beginning of line
• $ End of line