Rename a file

Rename a file
You are encouraged to solve this task according to the task description, using any language you may know.

In this task, the job is to rename the file called "input.txt" into "output.txt" and a directory called "docs" into "mydocs".

This should be done twice: once "here", i.e. in the current working directory and once in the filesystem root.

It can be assumed that the user has the rights to do so. (In unix-type systems, only the user root would have sufficient permissions in the filesystem root)

Ada

<lang ada>with Ada.Directories; use Ada.Directories;

  ...

Rename ("input.txt", "output.txt"); Rename ("docs", "mydocs"); Rename ("/input.txt", "/output.txt"); Rename ("/docs", "/mydocs");</lang> The behavior depends on the concrete operating system regarding:

• file name encoding issues;
• file path notation (directory separator, directory syntax etc);
• file extension syntax;
• file system root (provided there is any).

ALGOL 68

Works with: ALGOL 68 version Standard - no extensions to language used

Note: reidf does not appear to be included in ALGOL 68G. Also note that file names would be Operating System dependent. <lang algol68>main:(

 PROC rename = (STRING source name, dest name)INT:
 BEGIN
   FILE actual file;
   INT errno = open(actual file, source name, stand back channel);
   IF errno NE 0 THEN
     errno
   ELSE
     IF reidf possible(actual file) THEN
       reidf(actual file, dest name); # change the identification of the book #
       errno
     ELSE
       close(actual file);
       -1
     FI
   FI
 END;
 rename("input.txt", "output.txt");
 rename("/input.txt", "/output.txt");
 rename("docs", "mydocs");
 rename("/docs", "/mydocs")

)</lang>

AWK

Awk allows to call operating system commands with the system() function. However, the awk script won't get its output, only the return code. But this task is simple enough for the trivial implementation to work: <lang awk>$ awk 'BEGIN{system("mv input.txt output.txt")}' $ awk 'BEGIN{system("mv docs mydocs")}' $ awk 'BEGIN{system("mv /input.txt /output.txt")}' $ awk 'BEGIN{system("mv docs mydocs")}'</lang>

AutoHotkey

<lang AutoHotkey>FileMove, oldname, newname</lang>

AutoIt

FileMove("input.txt", "output.txt") FileMove("\input.txt", "\output.txt") DirMove("docs", "mydocs") DirMove("\docs", "\mydocs")

BASIC

<lang qbasic>NAME "input.txt" AS "output.txt" NAME "\input.txt" AS "\output.txt" NAME "docs" AS "mydocs" NAME "\docs" AS "\mydocs"</lang>

Applesoft BASIC

Apple DOS 3.3 has a flat filesystem with no concept of directories. DOS commands such as RENAME are run directly from the Applesoft prompt but are not technically part of Applesoft BASIC. Thus, attempting to add this line to a program and run it results in a syntax error on that line.

<lang basic>RENAME INPUT.TXT,OUTPUT.TXT</lang>

To use a DOS command from a program, use the BASIC statement PRINT followed by CHR$(4) and the string containing the DOS command.

<lang basic>10 PRINT CHR$ (4)"RENAME INPUT.TXT,OUTPUT.TXT"</lang>

Apple ProDOS does have directories. To change the current working directory to the "root" directory, issue a PREFIX / command.

<lang basic>10 PRINT CHR$ (4)"RENAME INPUT.TXT,OUTPUT.TXT" 20 PRINT CHR$ (4)"RENAME DOCS,MYDOCS" 30 PRINT CHR$ (4)"PREFIX /" 40 PRINT CHR$ (4)"RENAME INPUT.TXT,OUTPUT.TXT" 50 PRINT CHR$ (4)"RENAME DOCS,MYDOCS"</lang>

ZX Spectrum Basic

The ZX Spectrum basic does not not have a facility to rename a file on the microdrive. To rename a file, it is necessary to delete the file and recreate it. Alternatively, a machine code program can be used to achieve this.

Batch File

<lang dos>ren input.txt output.txt ren \input.txt output.txt ren docs mydocs ren \docs mydocs</lang>

BBC BASIC

Works with: BBC BASIC for Windows

When the file or directory names are known as constants at 'compile time': <lang bbcbasic> *RENAME input.txt output.txt

     *RENAME \input.txt \output.txt
     *RENAME docs. mydocs.
     *RENAME \docs. \mydocs.</lang>

When the file or directory names are known only at run time: <lang bbcbasic> OSCLI "RENAME input.txt output.txt"

     OSCLI "RENAME \input.txt \output.txt"
     OSCLI "RENAME docs. mydocs."
     OSCLI "RENAME \docs. \mydocs."</lang>

Bracmat

<lang bracmat>ren$("input.txt"."output.txt") { 'ren' is based on standard C function 'rename()' } ren$(docs.mydocs) { No quotes needed: names don't contain dots or colons. } ren$("d:\\input.txt"."d:\\output.txt") { Backslash is escape character, so we need to escape it. } ren$(@"d:\docs".@"d:\mydocs") { @ used as syntactic sugar as in C# for inhibiting escape. } </lang>

C

<lang c>#include <stdio.h>

int main() {

 rename("input.txt", "output.txt");
 rename("docs", "mydocs");
 rename("/input.txt", "/output.txt");
 rename("/docs", "/mydocs");
 return 0;

}</lang>

C++

Translation of: C

<lang cpp>#include <cstdio>

int main() {

   std::rename("input.txt", "output.txt");
   std::rename("docs", "mydocs");
   std::rename("/input.txt", "/output.txt");
   std::rename("/docs", "/mydocs");
   return 0;

}</lang>

Library: Boost

compiled with g++ -lboost_system -lboost_filesystem

<lang cpp>#include "boost/filesystem.hpp"

int main() {

   boost::filesystem::rename(
       boost::filesystem::path("input.txt"),
       boost::filesystem::path("output.txt"));
   boost::filesystem::rename(
       boost::filesystem::path("docs"),
       boost::filesystem::path("mydocs"));
   boost::filesystem::rename(
       boost::filesystem::path("/input.txt"),
       boost::filesystem::path("/output.txt"));
   boost::filesystem::rename(
       boost::filesystem::path("/docs"),
       boost::filesystem::path("/mydocs"));*/
   return 0;

}</lang>

C#

<lang csharp>using System; using System.IO;

class Program {

   static void Main(string[] args) {
       File.Move("input.txt","output.txt");
       File.Move(@"\input.txt",@"\output.txt");

       Directory.Move("docs","mydocs");
       Directory.Move(@"\docs",@"\mydocs");
   }

}</lang>

Clipper

<lang Clipper>FRename( "input.txt","output.txt") or RENAME input.txt TO output.txt

FRename("\input.txt","\output.txt") or RENAME \input.txt TO \output.txt</lang>

Clipper has no it's own functions to rename a directory, it is possible, though, to write appropriate code in C and link it to Clipper application, using the Clipper's Extend system.

Clojure

<lang clojure>(import '(java.io File))

(.renameTo (File. "input.txt") (File. "output.txt")) (.renameTo (File. "docs") (File. "mydocs"))

(.renameTo

(File. (str (File/separator) "input.txt"))
(File. (str (File/separator) "output.txt")))

(.renameTo

(File. (str (File/separator) "docs"))
(File. (str (File/separator) "mydocs")))</lang>

Common Lisp

rename-file

<lang lisp>(rename-file "input.txt" "output.txt") (rename-file "docs" "mydocs") (rename-file "/input.txt" "/output.txt") (rename-file "/docs" "/mydocs")</lang>

D

<lang d>std.file.rename("input.txt","output.txt"); std.file.rename("/input.txt","/output.txt"); std.file.rename("docs","mydocs"); std.file.rename("/docs","/mydocs");</lang>

DCL

<lang DCL>rename input.txt output.txt rename docs.dir mydocs.dir rename [000000]input.txt [000000]output.txt rename [000000]docs.dir [000000]mydocs.dir</lang>

Delphi

<lang Delphi>program RenameFile;

{$APPTYPE CONSOLE}

uses SysUtils;

begin

 SysUtils.RenameFile('input.txt', 'output.txt');
 SysUtils.RenameFile('\input.txt', '\output.txt');

 // RenameFile works for both files and folders
 SysUtils.RenameFile('docs', 'MyDocs');
 SysUtils.RenameFile('\docs', '\MyDocs');

end.</lang>

E

<lang e>for where in [<file:.>, <file:///>] {

 where["input.txt"].renameTo(where["output.txt"], null)
 where["docs"].renameTo(where["mydocs"], null)

}</lang>

Emacs Lisp

<lang lisp>(rename-file "input.txt" "output.txt") (rename-file "/input.txt" "/output.txt") (rename-file "docs" "mydocs") (rename-file "/docs" "/mydocs")</lang>

This can also be done interactively with M-x rename-file. Programmatically the default is to throw an error if the new name already exists but the "ok-if-already-exists" parameter can either forcibly overwrite or query the user. Query is the default interactively.

Erlang

<lang erlang> file:rename("input.txt","output.txt"), file:rename( "docs", "mydocs" ), file:rename( "/input.txt", "/output.txt" ), file:rename( "/docs", "/mydocs" ). </lang>

F#

Translation of: C#

<lang fsharp>open System.IO

[<EntryPoint>] let main args =

   File.Move("input.txt","output.txt")
   File.Move(@"\input.txt",@"\output.txt")
   Directory.Move("docs","mydocs")
   Directory.Move(@"\docs",@"\mydocs")
   0</lang>

Factor

<lang factor>"" "/" [

   [ "input.txt" "output.txt" move-file "docs" "mydocs" move-file ] with-directory

] bi@</lang>

Fantom

<lang fantom> class Rename {

 public static Void main ()
 {
   // rename file/dir in current directory
   File.rename("input.txt".toUri).rename("output.txt")
   File.rename("docs/".toUri).rename("mydocs/")
   // rename file/dir in root directory
   File.rename("/input.txt".toUri).rename("/output.txt")
   File.rename("/docs/".toUri).rename("/mydocs/")
 }

} </lang>

Forth

<lang forth> s" input.txt" s" output.txt" rename-file throw s" /input.txt" s" /output.txt" rename-file throw</lang>

Fortran

Using UNIX extensions to Fortran 77 (see e.g. g77 manual) : <lang fortran> PROGRAM EX_RENAME

     CALL RENAME('input.txt','output.txt')
     CALL RENAME('docs','mydocs')
     CALL RENAME('/input.txt','/output.txt')
     CALL RENAME('/docs','/mydocs')
     END</lang>

Go

<lang go>package main import "os"

func main() {

 os.Rename("input.txt", "output.txt")
 os.Rename("docs", "mydocs")
 os.Rename("/input.txt", "/output.txt")
 os.Rename("/docs", "/mydocs")

}</lang>

Groovy

Using File <lang groovy>['input.txt':'output.txt', 'docs':'mydocs'].each { src, dst ->

 ['.', ].each { dir ->
   new File("$dir/$src").renameTo(new File("$dir/$dst"))
 }

}</lang>

Using Ant <lang groovy>['input.txt':'output.txt', 'docs':'mydocs'].each { src, dst ->

 ['.', ].each { dir ->
   new AntBuilder().move(file:"$dir/$src", toFile:"$dir/$dst")
 }

}</lang>

Harbour

<lang visualfoxpro>FRename( "input.txt","output.txt") // or RENAME input.txt TO output.txt

FRename( hb_ps() + "input.txt", hb_ps() + "output.txt")</lang>

Harbour has no it's own functions to rename a directory, it is possible, though, to write appropriate code in C and link it to Harbour application, using the Harbour's Extend system.

Haskell

<lang haskell>import System.IO import System.Directory

main = do

 renameFile "input.txt" "output.txt"
 renameDirectory "docs" "mydocs"
 renameFile "/input.txt" "/output.txt"
 renameDirectory "/docs" "/mydocs"</lang>

HicEst

<lang hicest>WRITE(FIle='input.txt', REName='.\output.txt') SYSTEM(DIR='E:\HicEst\Rosetta') WRITE(FIle='.\docs', REName='.\mydocs')

WRITE(FIle='\input.txt', REName='\output.txt') SYSTEM(DIR='\') WRITE(FIle='\docs', REName='\mydocs') </lang>

Icon and Unicon

Icon supports 'rename' for files only. <lang Unicon>every dir := !["./","/"] do {

  rename(f := dir || "input.txt", dir || "output.txt")  |stop("failure for file rename ",f) 
  rename(f := dir || "docs", dir || "mydocs")           |stop("failure for directory rename ",f)
  }</lang>

Note: Icon and Unicon accept both / and \ for directory separators.

Io

<lang Io> // rename file in current directory f := File with("input.txt") f moveTo("output.txt")

// rename file in root directory f := File with("/input.txt") f moveTo("/output.txt")

// rename directory in current directory d := Directory with("docs") d moveTo("mydocs")

// rename directory in root directory d := Directory with("/docs") d moveTo("/mydocs") </lang>

J

J does not ship with a built-in utility for renaming files. The following will work on Windows, Linux and Macs:

<lang j>frename=: 4 : 0

if. x -: y do. return. end.
if. IFUNIX do.
  hostcmd=. [: 2!:0 '('"_ , ] , ' || true)'"_
  hostcmd 'mv "',y,'" "',x,'"'
else.
  'kernel32 MoveFileA i *c *c' 15!:0 y;x
end.

)</lang>

Useage: <lang j>'output.txt' frename 'input.txt' '/output.txt' frename '/input.txt' 'mydocs' frename 'docs' '/mydocs' frename '/docs'</lang>

Java

<lang java>import java.io.File; public class FileRenameTest {

  public static boolean renameFile(String oldname, String newname) {
      // File (or directory) with old name
      File file = new File(oldname);
  
      // File (or directory) with new name
      File file2 = new File(newname);
  
      // Rename file (or directory)
      boolean success = file.renameTo(file2);
      return success;
  }
  public static void test(String type, String oldname, String newname) {
      System.out.println("The following " + type + " called " + oldname +
          ( renameFile(oldname, newname) ? " was renamed as " : " could not be renamed into ")
          + newname + "."
      );
  }
  public static void main(String args[]) {
       test("file", "input.txt", "output.txt");
       test("file", File.separator + "input.txt", File.separator + "output.txt");
       test("directory", "docs", "mydocs");
       test("directory", File.separator + "docs" + File.separator, File.separator + "mydocs" + File.separator);
  }

}</lang>

JavaScript

Works with: JScript

Throws an error if the destination file/folder exists. <lang javascript>var fso = new ActiveXObject("Scripting.FileSystemObject"); fso.MoveFile('input.txt', 'output.txt'); fso.MoveFile('c:/input.txt', 'c:/output.txt'); fso.MoveFolder('docs', 'mydocs'); fso.MoveFolder('c:/docs', 'c:/mydocs');</lang>

Joy

<lang Joy> "input.txt" "output.txt" frename "/input.txt" "/output.txt" frename "docs" "mydocs" frename "/docs" "/mydocs" frename. </lang>

Julia

<lang julia> mv("input.txt", "output.txt") mv("docs", "mydocs") mv("/input.txt", "/output.txt") mv("/docs", "/mydocs")</lang>

Lasso

<lang Lasso >// move file local(f = file('input.txt'))

1. f->moveTo('output.txt')
2. f->close

// move directory, just like a file local(d = dir('docs'))

1. d->moveTo('mydocs')

// move file in root file system (requires permissions at user OS level) local(f = file('//input.txt'))

1. f->moveTo('//output.txt')
2. f->close

// move directory in root file system (requires permissions at user OS level) local(d = file('//docs'))

1. d->moveTo('//mydocs')</lang>

Liberty BASIC

<lang lb>' LB has inbuilt 'name' command, but can also run batch files

nomainwin

name "input.txt" as "output.txt" run "cmd.exe /c ren docs mydocs", HIDE name "C:\input.txt" as "C:\output.txt" run "cmd.exe /c ren C:\docs mydocs", HIDE

end</lang>

Locomotive Basic

<lang locobasic>|ren,"input.txt","output.txt"</lang> (AMSDOS RSX command, therefore prefixed with a vertical bar. Also, there are no subdirectories in AMSDOS, so there is no way to do the other tests.)

Lua

<lang lua>os.rename( "input.txt", "output.txt" ) os.rename( "/input.txt", "/output.txt" ) os.rename( "docs", "mydocs" ) os.rename( "/docs", "/mydocs" )</lang>

Maple

<lang Maple>use FileTools in

 Rename( "input.txt", "output.txt" );
 Rename( "docs", "mydocs" );
 Rename( "/input.txt", "/output.txt" ); # assuming permissions in /
 Rename( "/docs", "/mydocs" )           # assuming permissions in /

end use:</lang>

Mathematica

<lang Mathematica>SetDirectory[NotebookDirectory[]] RenameFile["input.txt", "output.txt"] RenameDirectory["docs", "mydocs"] SetDirectory[$RootDirectory] RenameFile["input.txt", "output.txt"] RenameDirectory["docs", "mydocs"]</lang>

MATLAB / Octave

<lang Matlab> [STATUS, MSG, MSGID] = movefile (F1, F2); </lang>

MAXScript

MAXScript has no folder rename method <lang maxscript>-- Here renameFile "input.txt" "output.txt" -- Root renameFile "/input.txt" "/output.txt"</lang>

Mercury

<lang mercury>:- module rename_file.

- interface.

- import_module io.

- pred main(io::di, io::uo) is det.

- implementation.

- import_module dir.

main(!IO) :-

   rename_file("input.txt", "output.txt", !IO),
   rename_file("docs", "mydocs", !IO),
   rename_file("/input.txt", "/output.txt", !IO),
   rename_file("/docs", "/mydocs", !IO).

- pred rename_file(string::in, string::in, io::di, io::uo) is det.

rename_file(OldName, NewName, !IO) :-

   io.rename_file(OldName, NewName, Result, !IO),
   (
       Result = ok
   ;
       Result = error(Error),
       print_io_error(Error, !IO)
   ).

- pred print_io_error(io.error::in, io::di, io::uo) is det.

print_io_error(Error, !IO) :-

  io.stderr_stream(Stderr, !IO),
  io.write_string(Stderr, io.error_message(Error), !IO),
  io.nl(Stderr, !IO),
  io.set_exit_status(1, !IO).</lang>

MUMPS

ANSI MUMPS doesn't allow access to the operating system except possibly through the View command and $View function, both of which are implementation specific. Intersystems' Caché does allow you to create processes with the $ZF function, and if the permissions for the Caché process allow it you can perform operating system commands.

In Cache on OpenVMS in an FILES-11 filesystem ODS-5 mode these could work:

<lang MUMPS> ;Local

S X=$ZF(-1,"rename input.txt output.txt")
S X=$ZF(-1,"rename docs.dir mydocs.dir")
 ;Root of current device
S X=$ZF(-1,"rename [000000]input.txt [000000]output.txt")
S X=$ZF(-1,"rename [000000]docs.dir [000000]mydocs.dir")</lang>

NetRexx

<lang NetRexx>/* NetRexx */ options replace format comments java crossref symbols binary

runSample(arg) return

-- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . method isFileRenamed(oldFile, newFile) public static returns boolean

 fo = File(oldFile)
 fn = File(newFile)
 fRenamed = fo.renameTo(fn)
 return fRenamed

-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ method runSample(arg) private static

 parse arg files
 if files =  then files = 'input.txt output.txt F docs mydocs D /input.txt /output.txt F /docs /mydocs D'
 loop while files.length > 0
   parse files of nf ft files
   select case(ft.upper())
     when 'F' then do
       ft = 'File'
       end
     when 'D' then do
       ft = 'Directory'
       end
     otherwise do
       ft = 'File'
       end
     end
   if isFileRenamed(of, nf) then dl = 'renamed'
   else                          dl = 'not renamed'
   say ft 'of' dl 'to' nf
   end

 return

</lang>

NewLISP

<lang NewLISP>(rename-file "./input.txt" "./output.txt") (rename-file "./docs" "./mydocs") (rename-file "/input.txt" "/output.txt") (rename-file "/docs" "/mydocs")</lang>

Nimrod

<lang nimrod>import os

moveFile("input.txt", "output.txt") moveFile("docs", "mydocs")

moveFile(DirSep & "input.txt", DirSep & "output.txt") moveFile(DirSep & "docs", DirSep & "mydocs")</lang>

Objeck

<lang objeck> use IO; bundle Default {

 class FileExample {
   function : Main(args : String[]) ~ Nil {
     File->Rename("input.txt", "output.txt");
     File->Rename("docs", "mydocs");
     File->Rename("/input.txt", "/output.txt");
     File->Rename("/docs", "/mydocs");
   }
 }

} </lang>

Objective-C

Works with: Cocoa

Works with: GNUstep

<lang objc>NSFileManager *fm = [NSFileManager defaultManager];

// Pre-OS X 10.5 [fm movePath:@"input.txt" toPath:@"output.txt" handler:nil]; [fm movePath:@"docs" toPath:@"mydocs" handler:nil];

// OS X 10.5+ [fm moveItemAtPath:@"input.txt" toPath:@"output.txt" error:NULL]; [fm moveItemAtPath:@"docs" toPath:@"mydocs" error:NULL];</lang>

OCaml

<lang ocaml>Sys.rename "input.txt" "output.txt";; Sys.rename "docs" "mydocs";; Sys.rename "/input.txt" "/output.txt";; Sys.rename "/docs" "/mydocs";;</lang>

Octave

<lang octave> rename('docs','mydocs'); rename('input.txt','/output.txt'); rename('/docs','/mydocs'); </lang>

OpenEdge/Progress

<lang progress>OS-RENAME "input.txt" "output.txt". OS-RENAME "docs" "mydocs".

OS-RENAME "/input.txt" "/output.txt". OS-RENAME "/docs" "/mydocs".</lang>

PARI/GP

GP has no built-in facilities for renaming, but can use a system call: <lang parigp>system("mv input.txt output.txt"); system("mv /input.txt /output.txt"); system("mv docs mydocs"); system("mv /docs /mydocs");</lang> PARI, as usual, has access to all the standard C methods.

Pascal

<lang pascal> var

   f : file ; // Untyped file
begin

 // as current directory
 AssignFile(f,'input.doc');
 Rename(f,'output.doc');

 // as root directory
 AssignFile(f,'\input.doc');
 Rename(f,'\output.doc');

 // rename a directory 
 AssignFile(f,'docs');
 Rename(f,'mydocs');

 //rename a directory off the root

 AssignFile(f,'\docs');
 Rename(f,'\mydocs');

end;</lang>

Perl

<lang perl>use File::Copy qw(move); use File::Spec::Functions qw(catfile rootdir);

1. here

move 'input.txt', 'output.txt'; move 'docs', 'mydocs';

1. root dir

move (catfile rootdir, 'input.txt'), (catfile rootdir, 'output.txt'); move (catfile rootdir, 'docs'), (catfile rootdir, 'mydocs');</lang>

The core rename($oldfile,$newfile) can rename a file within a directory, but has the usual limitations of the rename() system call or C library function, which means generally not working across filesystems, and perhaps not working to rename directories. move() does a copy and delete when necessary.

Perl 6

<lang perl6>rename 'input.txt', 'output.txt'; rename 'docs', 'mydocs'; rename '/input.txt', '/output.txt'; rename '/docs', '/mydocs';</lang>

PHP

<lang php><?php rename('input.txt', 'output.txt'); rename('docs', 'mydocs'); rename('/input.txt', '/output.txt'); rename('/docs', '/mydocs'); ?></lang>

PicoLisp

<lang PicoLisp>(call 'mv "input.txt" "output.txt") (call 'mv "docs" "mydocs") (call 'mv "/input.txt" "/output.txt") (call 'mv "/docs" "/mydocs")</lang>

Pike

<lang pike>int main(){

  mv("input.txt", "output.txt");
  mv("/input.txt", "/output.txt");
  mv("docs", "mydocs");
  mv("/docs", "/mydocs");

}</lang>

Pop11

<lang pop11>sys_file_move('inputs.txt', 'output.txt'); sys_file_move('docs', 'mydocs'); sys_file_move('/inputs.txt', '/output.txt'); sys_file_move(/'docs', '/mydocs');</lang>

Note that notion of the root of filesystem is Unix specific, so above we do not try to suport other systems.

PowerShell

<lang powershell>Rename-Item input.txt output.txt

1. The Rename-item has the alias ren

ren input.txt output.txt</lang>

ProDOS

<lang ProDOS>rename input.txt to output.txt rename docs to mydocs</lang>

PureBasic

<lang purebasic>RenameFile("input.txt", "output.txt") RenameFile("docs\", "mydocs\")

RenameFile("/input.txt","/output.txt") RenameFile("/docs\","/mydocs\")</lang>

Python

<lang python>import os

os.rename("input.txt", "output.txt") os.rename("docs", "mydocs")

os.rename(os.sep + "input.txt", os.sep + "output.txt") os.rename(os.sep + "docs", os.sep + "mydocs")</lang>

Or the alternative:

<lang python>import shutil

shutil.move("input.txt", "output.txt") shutil.move("docs", "mydocs")

shutil.move("/input.txt", "/output.txt") shutil.move("/docs", "/mydocs")</lang>

R

<lang R>file.rename("input.txt", "output.txt") file.rename("/input.txt", "/output.txt") file.rename("docs", "mydocs") file.rename("/docs", "/mydocs")</lang>

Racket

<lang racket>

1. lang racket

(rename-file-or-directory "input.txt" "output.txt") (rename-file-or-directory "docs" "mydocs")

find the filesystem roots, and pick the first one

(define root (first (filesystem-root-list)))

(rename-file-or-directory (build-path root "input.txt")

                         (build-path root "output.txt"))

(rename-file-or-directory (build-path root "docs")

                         (build-path root "mydocs"))

</lang>

Raven

<lang Raven>`mv /path/to/file/oldfile /path/to/file/newfile` shell</lang>

REALbasic

This should work regardless of what OS it's running under (but untested under Mac OS).

<lang vb>Sub Renamer()

   Dim f As FolderItem, r As FolderItem

   f = GetFolderItem("input.txt")
   'Changing a FolderItem's Name attribute renames the file or directory.
   If f.Exists Then f.Name = "output.txt"
   'Files and directories are handled almost identically in RB.
   f = GetFolderItem("docs")
   If f.Exists Then f.Name = "mydocs"

   'Jump through hoops to find the root directory.
   r = RootDir(GetFolderItem("."))

   f = r.Child("input.txt")
   'Renaming in a different directory identical to renaming in current directory.
   If f.Exists Then f.Name = "output.txt"
   f = r.Child("docs")
   If f.Exists Then f.Name = "mydocs"

End Sub

Function RootDir(what As FolderItem) As FolderItem

   'RB doesn't have an easy way to find the root of the current drive;
   'not an issue under *nix but troublesome under Windows.
   If what.Parent <> Nil Then  'Nil = no parent = root.
       Return RootDir(what.Parent) 'Recursive.
   Else
       Return what
   End If

End Function</lang>

REBOL

<lang REBOL>rename %input.txt %output.txt rename %docs/ %mydocs/

Unix. Note that there's no path specification used for the

new name. "Rename" is not "move".

rename %/input.txt %output.txt rename %/docs/ %mydocs/

DOS/Windows

rename %/c/input.txt %output.txt rename %/c/docs/ %mydocs/

Because REBOL treats data access schemes as uniformly as possible,

you can do tricks like this

rename ftp://username:password@ftp.site.com/www/input.txt %output.txt rename ftp://username:password@ftp.site.com/www/docs/ %mydocs/ </lang>

REXX

error messages shown

<lang rexx>/*REXX program renames a file & a directory (in current dir & in root).*/ trace off /*suppress error messages, bad RC*/

   do 2                               /* [↓]  perform this code twice. */
   'RENAME' "input.txt  output.txt"   /*rename a particular DOS file.  */
   'MOVE'   "\docs  \mydocs"          /*use (DOS) MOVE to rename a dir.*/
   'CD'     "\"                       /*for 2nd pass, change──►root dir*/
   end   /*2*/
                                      /*stick a fork in it, we're done.*/</lang>

error messages suppressed

<lang rexx>/*REXX program renames a file & a directory (in current dir & in root).*/ trace off /*suppress error messages, bad RC*/ $ = '2> NUL' /*used to suppress error messages*/

 do 2                                 /* [↓]  perform this code twice. */
 'RENAME' "input.txt  output.txt"  $  /*rename a particular DOS file.  */
 'MOVE'   "\docs  \mydocs"         $  /*use (DOS) MOVE to rename a dir.*/
 'CD'     "\"                      $  /*for 2nd pass, change──►root dir*/
 end   /*2*/
                                      /*stick a fork in it, we're done.*/</lang>

Ruby

<lang ruby>File.rename('input.txt', 'output.txt') File.rename('/input.txt', '/output.txt') File.rename('docs', 'mydocs') File.rename('/docs', '/mydocs')</lang>

With 'fileutils' from the standard library: The FileUtils#move method has some more flexibility than the core File#rename method (not really demonstrated here).

<lang ruby>require 'fileutils' moves = { "input.txt" => "output.txt", "/input.txt" => "/output.txt", "docs" => "mydocs","/docs" => "/mydocs"} moves.each{ |src, dest| FileUtils.move( src, dest, :verbose => true ) }</lang>

Run BASIC

RB has no direct command. You Shell out to windows or unix. <lang runbasic>a$ = shell$("RENAME input.txt output.txt") a$ = shell$("RENAME docs mydocs") a$ = shell$("RENAME \input.txt \output.txt") a$ = shell$("RENAME \docs \mydocs")</lang>

Scala

Library: Scala

Straight forward

<lang Scala>import scala.language.implicitConversions import java.io.File

object Rename0 {

 def main(args: Array[String]) {              // The implicit causes every String to File mapping,
   implicit def file(s: String) = new File(s) // will be converted to new File(String)
   "myfile.txt" renameTo "anotherfile.txt"
   "/tmp/myfile.txt" renameTo "/tmp/anotherfile.txt"
   "mydir" renameTo "anotherdir"
   "/tmp/mydir" renameTo "/tmp/anotherdir"
 }

}</lang>

Alternative

<lang Scala> object Rename1 {

 def main(args: Array[String]) {
   List(("myfile.txt", "anotherfile.txt"),("/tmp/myfile.txt", "/tmp/anotherfile.txt"),
        ("mydir", "anotherdir"),("/tmp/mydir", "/tmp/anotherdir")).foreach{ case (oldf, newf) ⇒
     new java.io.File(oldf) renameTo new java.io.File(newf)
   }
 }

} </lang>

Scheme

Works with: Chicken Scheme

Works with: Guile

<lang scheme>(rename-file "input.txt" "output.txt") (rename-file "docs" "mydocs") (rename-file "/input.txt" "/output.txt") (rename-file "/docs" "/mydocs")</lang>

Seed7

The library osfiles.s7i defines the function moveFile, which renames / moves a file. Seed7 uses a standard path representation to make paths operating system independent. In the standard path representation a / is used as path delimiter and drive letters like C: must be written as /c instead. Creating files and directories in a file system root may need privileges, so the program may fail, when it is started by a normal user.

<lang seed7>$ include "seed7_05.s7i";

 include "osfiles.s7i";

const proc: main is func

 begin
   moveFile("input.txt", "output.txt");
   moveFile("docs", "mydocs");
   moveFile("/input.txt", "/output.txt");
   moveFile("/docs", "/mydocs");
 end func;</lang>

Under Windows each filesystem has its own root. Therefore you need to replace "/input.txt", "/output.txt", "/docs" and "/mydocs" with "/c/input.txt", "/c/output.txt", "/c/docs" and "/c/mydocs".

Sidef

<lang ruby># Here File.rename('input.txt', 'output.txt'); File.rename('docs', 'mydocs');

1. Root dir

File.rename(Dir.root + %f'input.txt', Dir.root + %f'output.txt'); File.rename(Dir.root + %f'docs', Dir.root + %f'mydocs');</lang>

Slate

<lang slate>(File newNamed: 'input.txt') renameTo: 'output.txt'. (File newNamed: '/input.txt') renameTo: '/output.txt'. (Directory newNamed: 'docs') renameTo: 'mydocs'. (Directory newNamed: '/docs') renameTo: '/mydocs'.</lang>

Smalltalk

Works with: GNU Smalltalk

<lang smalltalk>File rename: 'input.txt' to: 'output.txt'. File rename: 'docs' to: 'mydocs'. "as for other example, this works on systems

where the root is / ..."

File rename: '/input.txt' to: '/output.txt'. File rename: '/docs' to: '/mydocs'</lang>

Works with: Smalltalk/X

Works with: VisualWorks Smalltalk

<lang smalltalk>'input.txt' asFilename renameTo: 'output.txt'. 'docs' asFilename renameTo: 'mydocs'. '/input.txt' asFilename renameTo: '/output.txt'. '/docs' asFilename renameTo: '/mydocs'</lang>

Standard ML

<lang sml>OS.FileSys.rename {old = "input.txt", new = "output.txt"}; OS.FileSys.rename {old = "docs", new = "mydocs"}; OS.FileSys.rename {old = "/input.txt", new = "/output.txt"}; OS.FileSys.rename {old = "/docs", new = "/mydocs"};</lang>

Tcl

Assuming that the Bash example shows what is actually meant with this task (one file and one directory here, one file and one directory in the root) and further assuming that this is supposed to be generic (i.e. OS agnostic): <lang tcl>file rename inputs.txt output.txt file rename docs mydocs

file rename [file nativename /inputs.txt] [file nativename /output.txt] file rename [file nativename /docs] [file nativename /mydocs]</lang> Without the need to work on unusual platforms like Mac OS 9, the code could be just: <lang tcl>file rename inputs.txt output.txt file rename docs mydocs

file rename /inputs.txt /output.txt file rename /docs /mydocs</lang>

Toka

<lang toka>needs shell " input.txt" " output.txt" rename " /input.txt" " /output.txt" rename

" docs" " mydocs" rename " /docs" " /mydocs" rename</lang>

TorqueScript

<lang Torque>fileCopy("Input.txt", "Output.txt"); fileDelete("Input.txt");

for(%File = FindFirstFile("Path/*.*"); %File !$= ""; %File = FindNextFile("Path/*.*")) { fileCopy(%File, "OtherPath/" @ %File); fileDelete(%File); }</lang>

TUSCRIPT

<lang tuscript> $$ MODE TUSCRIPT - rename file ERROR/STOP RENAME ("input.txt","output.txt") - rename directory ERROR/STOP RENAME ("docs","mydocs",-std-) </lang>

TXR

TXR works with native paths.

<lang txr>@(do (rename-path "input.txt" "output.txt")

    ;; Windows (MinGW based port)
    (rename-path "C:\\input.txt" "C:\\output.txt")
    ;; Unix; Windows (Cygwin port)
    (rename-path "/input.txt" "/output.txt"))</lang>

Directories are renamed the same way; input.txt could be a directory.

UNIX Shell

<lang bash>mv input.txt output.txt mv /input.txt /output.txt mv docs mydocs mv /docs /mydocs</lang>

Vedit macro language

Vedit allows using either '\' or '/' as directory separator character, it is automatically converted to the one used by the operating system. <lang vedit>// In current directory File_Rename("input.txt", "output.txt") File_Rename("docs", "mydocs")

// In the root directory File_Rename("/input.txt", "/output.txt") File_Rename("/docs", "/mydocs")</lang>

Visual Basic .NET

Platform: .NET

Works with: Visual Basic .NET version 9.0+

<lang vbnet>'Current Directory IO.Directory.Move("docs", "mydocs") IO.File.Move("input.txt", "output.txt")

'Root IO.Directory.Move("\docs", "\mydocs") IO.File.Move("\input.txt", "\output.txt")

'Root, platform independent IO.Directory.Move(IO.Path.DirectorySeparatorChar & "docs", _

IO.Path.DirectorySeparatorChar & "mydocs")

IO.File.Move(IO.Path.DirectorySeparatorChar & "input.txt", _

 IO.Path.DirectorySeparatorChar & "output.txt")</lang>

Yorick

Translation of: UNIX Shell

<lang yorick>rename, "input.txt", "output.txt"; rename, "/input.txt", "/output.txt"; rename, "docs", "mydocs"; rename, "/docs", "/mydocs";</lang>