The maximum length of directory and file names varies from system to system. Some versions (such as HP's HP/UX) may restrict the names to 14 characters, whereas most allow much longer file and path names.
For example, Sun and SGI workstations allows file names up to 255 characters long, and path names to be as long as 1023 characters (a path name is the full length of the file name, beginning at the top - root - of the file system).