World Library  
Flag as Inappropriate
Email this Article

Rmdir

Article Id: WHEBN0000380937
Reproduction Date:

Title: Rmdir  
Author: World Heritage Encyclopedia
Language: English
Subject: Windows PowerShell, Del (command), Nslookup, Pushd and popd, Mkdir
Collection: Internal Dos Commands, Unix File System-Related Software, Unix Sus2008 Utilities, Windows Administration
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Rmdir

rmdir (or rd) is a command which will remove an empty directory on a Unix (e.g. OS X), Unix-like (e.g. FreeBSD, Linux), DOS, OS/2 or Microsoft Windows operating system.

Contents

  • Usage 1
  • NT functionality 2
  • See also 3
  • References 4

Usage

Normal usage is straightforward:

 rmdir name_of_directory

where name_of_directory corresponds with the name of the directory one wishes to delete. There are options to this command such as -p in Unix which removes parent directories if they are also empty.

For example:

 rmdir -p foo/bar/baz

will first remove baz/, then bar/ and finally foo/ thus removing the entire directory tree specified in the command argument.

rmdir will not remove a directory if it is not empty in UNIX. The correct way to remove a directory and all its contents recursively is with the rm command. For example:

 rm -r foo/bar/baz
 rm -rf foo/bar/baz

The DOS equivalent of this command is deltree, or in Microsoft Windows.

 rd /s directory_name

NT functionality

Windows based on the NT kernel (XP, Vista, 7, 8, Server 2003/2008) are case insensitive, just like their earlier predecessors, unless two files of the same name and different case exist. Then case sensitivity applies when selecting which file to use, or if the case does not match either file, one may be chosen by Windows.

Having two files named the same with different case sensitivity is allowed either when Windows Services for Unix is installed or when the registry settings are set to allow it.

An example of the security risk is:

Using rd/rmdir and two directories with the same name and different case sensitivities exist, one of which contains valid data and/or programs, and the other contains incriminating materials and/or malware. If rd/rmdir gets executed without regard to case sensitivity and Windows chooses the legitimate folder to delete, the only folder left is the undesired one. Windows then uses this folder instead of the previously legitimate one to execute programs, and one may be led to believe it contains legitimate data.

See also

References

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.