The /opt file system is a relative newcomer to Unix file systems and is primarily used to house optional software packages. /tmp was and still is, of course, intended for temporary files.

For UNIX System Services files that are created by SAS, the file mode for new files is "-rw-rw-rw-"; however, this mode is modified by the current file-mode creation mask. For example, x umask 022 ...

Send in your Unix questions today! | See additional Unix tips and tricks We have looked at the fuser command before to display information about what users or processes are keeping file systems busy.

The old UNIX file permission system is commonly the only method of access control that people use. The basic file ownership permissions (user, group, and world/other) on UNIX are a bit outdated.

Network file system (NFS), server message block (SMB) and common internet file system (CIFS) are all file access storage protocols, used to access files on remote servers and storage servers (such ...