Unix/ls

Unix/ls is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

Write a program that will list everything in the current folder, similar to the Unix utility “ls” [1] (or the Windows terminal command “DIR”). The output must be sorted, but printing extended details and producing multi-column output is not required.

Example output

For the list of paths:

/foo/bar
/foo/bar/1
/foo/bar/2

When the program is executed in `/foo`, it should print:

bar

and when the program is executed in `/foo/bar`, it should print:

1
2

Rust

<lang rust>use std::os; use std::io::fs;

fn main() { let cwd = os::getcwd(); match fs::readdir(&cwd) { Ok(v) => { let mut filenames = Vec::new(); for entry in v.iter() { match entry.filename_str() { Some(str) => filenames.push(str), None => fail!(format!("unable to get filename of path {}", entry.display())) }; }

filenames.sort(); for filename in filenames.iter() { println!("{}", filename); } } Err(e) => fail!(e) } }</lang>

Tcl

<lang tcl>puts [join [lsort [glob -nocomplain *]] "\n"]</lang>