Working Directories

 

            Every process has a working directory, which is a directory handle that is used by default as the base directory for looking up a relative path name when a NIL directory handle is supplied with the path name. Normally the working directory of a process is specified when the process is created (see the SetWD procedure on page ) and is never changed. Changing the working directory in a multithreaded process is likely to cause undesired interference between threads. Another reason to avoid changing the working directory is that the operating system writes a file with the path name core in the working directory under some conditions, and it can be hard for the user to find this file if the working directory has been changed (see Section 5.4). If it is really necessary, the working directory of a running process can be changed using OSFriends.SetMyWD, described in Appendix A.1, page .