periodicaidan / winsz

A stupid little program that prints the size of your terminal

winsz

A stupid little program that prints the size of your terminal

Building

Requirements

• GCC
• Make

Making

Run make.

Installing

I just have a symlink in my scripts folder that points to target/release/winsz.

How to Use It

Run winsz in your terminal.

FAQ

Is this a joke of some kind?

Yes and no.

Yes because "[w]indow sizes are kept in the kernel, but not used by the kernel", so they have to be retrieved using a system call—an ioctl to be more specific—and the ioctl for getting the size of a terminal window is TIOCGWINSZ (Terminal Input/Output Control Get WINdow SiZe). It's all just so Unix that it feels like a parody.

No because I made this while I was bored and wanted to play around with how to structure a C project.

Why didn't you do this in Rust as you do everything else?

I definitely could have but for something so simple and fool-proof I didn't wanna make a whole new Cargo project. I figured it'd be painless enough to just do in C. Besides, calling ioctls in Rust would require 👻 unsafe code 👻

It doesn't work on my machine!

It is literally 40 lines of C. You can probably fix it yourself.

Where can I read more about the concepts used in this program?

It's all in the man pages:

• man ioctl
• man ioctl_tty
• man termios

Poke around these and their "SEE ALSO"s, Google some stuff. You know how it goes.