unix

A snapshot of your home directory is periodically taken.
At a terminal prompt, type: cd .snapshot
If you type: ls
You will see a list of directories:
./ hourly.1/ hourly.4/ nightly.1/ nightly.4/ weekly.1/ ../ hourly.2/...

There are three main repositories of documentation in UNIX.

• man - The UNIX Manual
• info - The UNIX Information System
• doc - The Documentation Tree

man
For information about gcc, the GNU C Compiler, you would use:

man gcc

man displays pages of the UNIX...

Use file to determine the type of a file. For example, you receive the file unknown from another user and you want to know sort of file is unknown.

file unknown unknown: JPEG image data, JFIF standard

file returns that unknown is a Jpeg file...

The Tape Archive program (tar) is used to create a single file from many files. Tar files are not smaller (compressed) than the original files, they are the union of all files archived. To compress tar files, use gzip or compress after creation.

Cr...