Create a folder

Question

Challenge

Given an input x, create a directory (AKA folder) in the file system with the name x.

Languages that are not able to create file system directories are excluded from this challenge.

The directory may be created anywhere, as long as the location is writable to the user running the program. Assume that the program is run as a non-privileged user on a modern Linux (or Windows if needed) desktop system.

Clarifications

• Assume that the current directory is $HOME/%USERPROFILE%.
• Assume that no file or directory exists with the name given.
• Assume that the filename will only contain the characters abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.
• Assume that the filename will always be 8 characters long or shorter.

Rules

• The directory must actually be created. You can't just say "I made it in /dev/null".
• Standard loopholes apply.
• This is code-golf.

Answer 1

MATLAB/Octave, 6 bytes

@mkdir

Creates a function handle named ans to the built-in function mkdir which accepts the folder to be created as a string

ans('folder_to_create')
ans('/absolute/path/to/folder/to/create')

Answer 2

Ruby, 11 + 1 = 12 bytes

+1 for -n

Dir.mkdir$_

Try it online!

Answer 3

Julia 0.5, 5 bytes

mkdir

Try it online!

Answer 4

Java, 33 31 bytes

-2 bytes thanks to @Phoenix - removing curly braces around lambda.

s->new java.io.File(s).mkdir();

In the form of a Consumer<String> where s is the name of the folder to create.

Answer 5

Bash, 8 bytes

mkdir $1

Try it online!

Answer 6

Python, 18 bytes

import os
os.mkdir

Answer 7

Batch, 6 bytes

@md %*

Try it online!

Answer 8

Go, 46 bytes

import."os"
func f(n string){Mkdir(n,ModeDir)}

Answer 9

Wolfram Language (Mathematica), 14 bytes

Run["md "<>#]&

Try it online!

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The trivial approach is longer. Surprise! (demonstrates that Mathematica is very verbose)

Works on Windows only, where md is the command to create a directory. See this answer or this answer.

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Explanation:

Run["md "<>#]&   Anonymous function.

    "md "        String literal "md ". (with a trailing space to separate
                   the command and the parameter (directory name)
           #     The input.
         <>      `StringJoin` together.
Run[        ]    Runs as a command.

Answer 10

Mathematica, 15 bytes

CreateDirectory

Answer 11

C#, 35 bytes

System.IO.Directory.CreateDirectory

Does what it says on the tin.

Answer 12

Batch, 2 bytes

md

md means make directory. Here it is in action:

C:\tmp>set f=md

C:\tmp>%f% foo

C:\tmp>dir f*.*
 Volume in drive C is OS
 Volume Serial Number is 6CC3-3025

 Directory of C:\tmp

02-Feb-18  09:56    <DIR>          foo
               0 File(s)              0 bytes
               1 Dir(s)  378,122,883,072 bytes free

Answer 13

APL (Dyalog Unicode), 6 bytes

Prefix function.

⎕MKDIR

Try it online!

Answer 14

tcl, don't know how to count

My count could be:

• 13, if everything on file mkdir $x is accounted.

• 12, if file mkdir $as how I have seen in some answers x is not taken into account

• 11, because in tcl whenever you use the value of x , you type $x, so only file mkdir is taken into account

• 10, if is file mkdir by removing the trailing space from previous.

Source:

file mkdir $x

demo — Please reserve it for question asker. Look at files tree at the left where there is only root and main.tcl . Click the Execute button, it will run a script command on the green area; In the top of the files tree there is a Refresh button symbolized by an icon, click it and see folder1 and folder2 appearing.