Working directory

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In computing, the working directory of a process is a directory of a hierarchical file system, if any,^[1] dynamically associated with each process. When the process refers to a file using a simple file name or relative path (as opposed to a file designated by a full path from a root directory), the reference is interpreted relative to the current working directory of the process. So for example a process with working directory \rabbit-hats that asks to open the file foo.txt will end up opening the file \rabbit-hats\foo.txt.

In most DOS and UNIX command shells, as well as in the Microsoft Windows command line interpreters cmd.exe and Windows PowerShell, the working directory can be changed by using the cd or chdir commands. In Unix shells, the pwd command outputs the absolute pathname of the current working directory; the equivalent command in DOS and Windows is cd without arguments (whereas in Unix, cd used without arguments takes the user back to his/her home directory). The POSIX function chdir(), where available, can be called by a process to set its working directory.

[edit] See also

• Home directory
• Root directory
• Parent directory

[edit] References

1. ^ There are operating systems that support a hierarchical file system but have no concept of "working directory"; for example Texas Instruments' DX10, used for the TI-990 series.

[edit] External links

• Working Directory (wd), a software package that tracks commonly used directories in a bash session