diff --git a/doc_src/echo.txt b/doc_src/echo.txt index 697e88aec..cfa9849ef 100644 --- a/doc_src/echo.txt +++ b/doc_src/echo.txt @@ -9,8 +9,29 @@ Display a line of text. - \c -n, \c Do not output a newline - \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 +\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 echo 'Hello World' Print hello world to stdout + +echo -e 'Top\\nBottom' Print Top and Bottom on separate lines, using an escape sequence