diff --git a/README.md b/README.md new file mode 100644 index 0000000..1b11bfe --- /dev/null +++ b/README.md @@ -0,0 +1,48 @@ +# echo-rs + +My rewrite of the echo GNU core utility in rust + +version: 0.1.0 +author: [Lu Baumann](https://blog.surferlul.me/) + +## usage + +refer to `echo-rs --help`: + +``` +Usage: echo-rs [SHORT-OPTION]... [STRING]... + or: echo-rs LONG-OPTION +Echo the STRING(s) to standard output. Rust rewrite of GNU echo util. + + -n do not output the trailing newline + -e enable interpretation of backslash escapes + -E disable interpretation of backslash escapes (default) + --help display this help and exit + --version output version information 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) +``` + +## testing + +test script requires python >= 3.10 + +`gnu_echo_tests/test.py -e /bin/echo -b ` + +| parameter | value | +| ---------------- | --------------------------------------- | +| `-e`, `--echo` | path to echo executable to test against | +| `-b`, `--binary` | path to echo-rs binary to test |