The directory-control routines let a program access, modify, and obtain information about the directory structure. These routines are functions and are declared in DIRECT.H.
| Routine | Use |
| _chdir | Changes current working directory |
| _chdrive | Changes current drive |
| _getcwd | Gets current working directory for the specified drive |
| _getdrive | Gets current working directory |
| _mkdir | Makes a new directory |
| _rmdir | Removes a directory |
| _searchenv | Searches for a given file on specified paths |