![]() For example, the string function ++ is documented, but the example uses the word append, which doesn’t seem to work. The documentation on Github is good, but there are a few things you’ll have to work out. So the above examples do not leave the result on the stack. However, the stack doesn’t exist between lines. ![]() In fact, it all looks like Forth from swap and drop to the way if controls conditionals. Storing into variables is similar to Forth, too, using ! and with the RPN-style notation. ![]() In fact, Forth programmers will appreciate the RPN capabilities: /tmp/cosh$ 5 3 / The input prompt is more like a command prompt for a programming language. Basic items include booleans, integers (32-bit or of arbitrary size), floats, and strings. In particular, it can deal with hash maps, sets, and lists. The key idea is that this shell understands multiple data types. iname ‘*test*’ -print0 | xargs -0 grep dataĪs you can see, sometimes commands are a little longer, but presumably, there is less to remember, and it is a bit more self-documenting. Find files matching a path, and search them for data:.The Github page has several good examples: ExamplesĪ good way to get a quick flavor of the shell’s idiosyncracies is to contrast it with the usual shell syntax. Once you have it running, you’ll have a few new things to learn compared to other shells you’ve used. For most distributions, that’s just a package install (rust-all in Ubuntu-like distros, for example). The system is written with Rust, so you will need Rust setup to compile it. But what if the shell understood more data types other than streams? You might argue it would make some things better and some things worse, but you don’t have to guess, you can install cosh, a shell that provides tools to produce and work with structured data types. ![]() This lets you do things like take a directory listing, sort it, remove the duplicates, and compare it to another directory listing. Granted, modern software has blurred this a bit, but at the command line, everything is text with certain loose conventions about what separates fields and records. One of the most powerful features of Unix and Linux is that using traditional command line tools, everything is a stream of bytes. ![]()
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