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.

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 The basic file ownership permissions (user, group, and world/other) on UNIX are a bit outdated.

Using fsck. To see fragmentation on a Unix system, you would generally use a command such as fsck that reports the percentage of fragmentation on the file system.

Id: 007990 Credits Min: 3 Credits Max: 3 Description. Addresses manipulating and maintaining files within the UNIX file system; creating and editing text files using the vi and ed editors; using pipes ...

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 ...

There are many ways to move files between Unix and Windows. In my mind, they fall into three categories — secure copy (let’s not even think about ftp), shared drives, and file synchronization.

These files or directories typically contain configuration information or log files for the Unix system. The .bash_history file, for example, logs all the commands you enter on the command line. IDG.

Several years after I left the Unix project, a patent application for the Unix file system by me, Ken, and Dennis arrived for my signature. I signed it, but did not keep a copy.