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.
A Unix shell is a command-line interpreter or shell that provides a traditional user interface for the Unix operating system and for Unix-like systems.he Unix shell is both an interactive command language as well as a scripting programming language, and is used by the operating system as the facility to control (shell script) the execution of the system.