Major Depressive Disorder. The leading cause of disability in the U.S. for ages 15 to 44.3. Affects approximately 14.8 million American adults, or about 6.7 percent of the U.S. population age 18 and older in a given year. While major depressive disorder can develop at any age, the median age at onset is 32.5. More prevalent in women than in men.
Linux vs. Unix. Linux is an open source, free to use operating system widely used for computer hardware and software, game development, tablet PCS, mainframes etc. Unix is an operating system commonly used in internet servers, workstations and PCs by Solaris, Intel, HP etc. current rating is 4.09/5.
Some Basic UNIX Concepts. Every user has a unique username. When they logon to the system, they are placed in a HOME directory, which is a portion of the disk space reserved just for them. When you log onto a UNIX system, your main interface to the system is called the UNIX SHELL. This is the program that presents you with the dollar sign ($) prompt.