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What is zombie state in Unix?
A zombie process is a process that completed execution but still in process table. When a process ends, all of the memory and resources associated with it are deallocated so they can be used by other processes. However, the process's entry in the process table remains. The parent can read the child's exit status by executing the wait system call, at which stage the zombie is removed After the zombie is removed, its process ID and entry in the process table can then be reused. However, if a parent fails to call wait, the zombie will be left in the process table. In some situations this may be desirable, for example if the parent creates another child process it ensures that it will not be allocated the same process ID.
In Unix inter process communication take place using?
pipes - nammed and unnammed
What is process in unix?
process control
What is process control in Unix?
process control
What is Unix configuration?
Unix configuration is the process of tailoring a freshly installed version of Unix to your particular environment. Each Unix system may do that differently.
What is portablity in terms of unix?
Unix is inherently portable; this means that a program, script, or process may be moved from Unix system to Unix system with little effort or change (hence - portable).
How are processes created and deleted in UNIX Operating system?
In UNIX, processes are created using the fork() system call, which creates a new process by duplicating the calling process. The new process, known as the child process, can then execute a different program using the exec() family of functions. Processes are deleted when they complete their execution, or they can be terminated by another process using the kill() system call, which sends a signal to terminate the specified process. Once a process terminates, its resources are reclaimed by the operating system, though it may remain in a "zombie" state until its parent process retrieves its exit status.
Is unix a multi-process operating system or not?
Yes
The Unix and Linux service the runs in the background is known as the?
Any Linux/Unix process that runs in the background is called a 'daemon' process. The word derives from the Greek meaning "worker".
What is the parent process ID of an orphan process in UNIX?
Usually any orphaned process is owned by the 'init' process (process #1)
What does bg stands for in computer system?
BG is a command on Unix and Unix-like operating systems to run a job(process) asynchronously in the background.
4 What is a process to Explain the mechanism of process creation in UNIX system?
Are u talking abt the KErnal process? A program under execution is called process. All processes in UNIX are created using the fork() system call. rest of the question not clear.. SiddharthGanguly
