This section provides an overview of what unix is, and why a developer might want to use it.

It should also mention any large subjects within unix, and link out to the related topics. Since the Documentation for unix is new, you may need to create initial versions of those related topics.

In UNIX, there are three permissions used to grant a certain level of access to a file or folder.

For files:

• Read: Allow the user/group/others to read a file.
• Write: Allow the user/group/others to modify a file.
• Execute: Allow the user/group/others to execute (or run) a file.

These are slightly changed for directories:

• Read: Allow the user/group/others to list the names of files in a directory.
• Write: Allow the user/group/others to create, delete and rename files in a directory.
• Execute: Allow the user/group/others to access file metadata and contents for a directory.

These permissions can be represented using the letters "r" for read, "w" for write, and "x" for execute. They can also be represented numerically: 4 for read, 2 for write and 1 for execute.