Unix/ls: Difference between revisions
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{{draft task}} |
{{draft task}} |
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Write a program that will list everything in the current folder, similar to the Unix utility |
Write a program that will list everything in the current folder, similar to the Unix utility “<tt>ls</tt>” [http://man7.org/linux/man-pages/man1/ls.1.html] (or the Windows terminal command “<tt>DIR</tt>”). The output must be sorted, but printing extended details and producing multi-column output is not required. |
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For the list of paths: |
For the list of paths: |
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<pre>/foo/bar |
<pre>/foo/bar |
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/foo/bar/1 |
/foo/bar/1 |
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When the program is executed in `/foo`, it should print: |
When the program is executed in `/foo`, it should print: |
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<pre>bar</pre> |
<pre>bar</pre> |
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and when the program is executed in `/foo/bar`, it should print: |
and when the program is executed in `/foo/bar`, it should print: |
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<pre>1 |
<pre>1 |
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2</pre> |
2</pre> |
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=={{header|Rust}}== |
=={{header|Rust}}== |
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<lang rust> |
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use std::io::fs; |
use std::io::fs; |
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} |
} |
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}</lang> |
}</lang> |
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=={{header|Tcl}}== |
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<lang tcl>puts [join [lsort [glob -nocomplain *]] "\n"]</lang> |
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Revision as of 08:56, 6 June 2014
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) => { for entry in v.iter() { match entry.filename_str() { Some(str) => println!("{}", str), None => println!("Error: Unable to get filename of path {}", entry.display()) }; } } Err(_) => println!("Error: Unable to get contents of directory.") } }</lang>
Tcl
<lang tcl>puts [join [lsort [glob -nocomplain *]] "\n"]</lang>