Permissions value
If the permissions of a file are 645. how do you compute what it means?
Expert
The permissions value is four for read, two for write, one for execute always. The three numbers are for group, owner and everybody always on the system. So 645 means: owner - read & write, group - read only, everybody - read & execute
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Explain the term commensalism. Describe in detail.
Semaphore: It is a software or hardware flag. In case of multitasking systems, a semaphore is a variable with a value which points out the status of a common resource. It is emp
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