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On Unix, directories in a file name are seperated by a forward slash ( `/' ). On Windows, directories are separated by a backward slash ( `\' ). For example, the Unix file `dir/file' on Windows would be `dir\file' .(35)
On Unix, a list of directories is normally separated by a colon ( `:' ). On Windows, a list of directories is normally separated by a semicolon ( `;' ). For example, a simple Unix search path might look like this: `/bin:/usr/bin' . The same search path on Windows would probably look like this: `c:\bin;c:\usr\bin' .
On Unix, the file system is a single tree rooted at the directory simply named `/' . On Windows, there are multiple file system trees. Absolute file names often start with a drive letter followed by a colon. Windows maintains a default drive, and a default directory on each drive, which can make it difficult for a program to convert a relative file name into the absolute file name intended by the user . Windows permits referring to files on other systems by using a file name which starts with two slashes followed by a system name.