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A Unix shell is a shell or command-line interpreter that gives a traditional user interface for the Unix-likesystems and for Unix operating system. Users operates the operation of the computer by entering instructions as text for a command line interpreter to run or by creating text scripts of one or more such instructions.
The most influential Unix shells have been the C shell and the Bourne shell. The Bourne shell, sh, was prepared by Stephen Bourne at AT&T as the general Unix command line interpreter; it produced the basic features common to all the Unix shells, adding piping, here documents, variables, command substitution, control structures for condition-testing and filename wildcarding and looping. The language, adding the use of a declared keyword to use the end of a block, was added by ALGOL 68.
List out the advantages of windows 2000 file management. Permits detailed security for individual folders and files. Built-in granular compression capabilities
What is starvation? A main problem related to deadlock is starvation. Starvation is the circumstances where process waits indefinitely within the semaphore. Indefinite blocking
Q. Presume that the following processes arrive for execution at the times indicated. Every process will run the listed amount of time. In responding the questions use non pre-empti
Q. In the IBM/370 memory protection is offered through the use of keys. A key is a 4-bit quantity every 2K block of memory has a key (the storage key) associated with it. The CPU
difference between process and thread
Evicting the most-recently used (MRU) page does very well on LRU's worst case. In general, however, MRU is a bad idea, since many programs exhibit temporal locality in their memory
swapping technique
What are the requirements for solution of critical section problems? Mutual exclusion : If process p is implementing in its critical section then no other processes can be exe
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
What are the three main activities of an operating system in regard to secondary-storage management? a) Free-space management. b) Storage allocation. c) Disk scheduling.
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