echo displays the command tail, with backslash substitution.
echo [SHORT-OPTION]... [STRING]...
| Echo the STRING(s) to standard output. | |
| -e | enable interpretation of backslash escapes |
| -E | disable interpretation of backslash escapes (default) |
| --help | display this help and exit |
| If -e is in effect, the following sequences are recognized: | |
| \\ | 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) |
The source was assembled with a modified version of the A18 assembler. The header files `bios.inc` and `kernel.inc` are slightly modified versions of Mike Riley's files; the `#ifdef...#endif` bits have been removed or unconditionally included as appropriate, `#define`s changed to `equ`, and upper/lower casing was made consistent.