28-02-2013, 04:48 PM
Viva Questions Unix
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1. What is UNIX?
It is a portable operating system that is designed for both efficient multi-tasking and mult-user functions. Its portability allows it to run on different hardware platforms. It was written is C and lets user do processing and control under a shell.
2. What is the Use of including header file unistd.h?
It is used for Fork Sytem call.
3. What is POSIX
It is an abbreviation for "Portable Operating System Interface". POSIX defines the application programming interface (API), along with command line shells and utility interfaces, for software compatibility with variants of Unix and other operating systems.
4. What is Parent process?
It’s a process that has created one or more child processes.
5. What is the use of SYSCONF?
sysconf gets configuration information at runtime and provides a way for the application to determine values for system limits or options at runtime.