Bash quoting with ANSI-C style
时间：2011-06-04 来源：greencolor
\a alert (bell) \b backspace
\e an escape character \f form feed
\n newline \r carriage return
\t horizontal tab \v vertical tab
\\ backslash \` single quote
\nnn octal value of characters ( see [http://www.asciitable.com/ ASCII table] )
\xnn hexadecimal value of characters ( see [http://www.asciitable.com/ ASCII table] )
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