Document -e and -E flags for echo, and provide some examples

This commit is contained in:
ridiculousfish 2013-03-05 17:37:44 -08:00
parent daf5ef1bbd
commit b2012467b3

View File

@ -9,8 +9,29 @@ Display a line of text.
- \c -n, \c Do not output a newline - \c -n, \c Do not output a newline
- \c -s, \c Do not separate arguments with spaces - \c -s, \c Do not separate arguments with spaces
- \c -E, \c Disable interpretation of backslash escapes (default)
- \c -e, \c Enable interpretation of backslash escapes
- \c -h, \c --help Display this help - \c -h, \c --help Display this help
\subsection echo-escapes Escape Sequences
If -e is in effect, the following sequences are recognized:
- \c \\\\ \c backslash
- \\a alert (BEL)
- \\b backspace
- \\c produce no further output
- \\e escape
- \\f form feed
- \\n new line
- \\r carriage return
- \\t horizontal tab
- \\v vertical tab
- \\0NNN byte with octal value NNN (1 to 3 digits)
- \\xHH byte with hexadecimal value HH (1 to 2 digits)
\subsection echo-example Example \subsection echo-example Example
<tt>echo 'Hello World'</tt> Print hello world to stdout <tt>echo 'Hello World'</tt> Print hello world to stdout
<tt>echo -e 'Top\\nBottom'</tt> Print Top and Bottom on separate lines, using an escape sequence