Purpose of exec functions
Specify the purpose of exec functions?
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Whenever a process calls one of the exec functions, that particular process is fully replaced through the new program. New program starts its execution from the main function. The processed does not alters across an exec since a new process is not created. However, this function substitutes the current process with the new program from the disk.
Case sensitive: The test which is sensitive to whether a character is in upper-case (example, 'A') or lower-case (example, 'a').
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Unicode: It is a 16-bit character set designed to make it simpler to exchange and exhibit information which makes use of a broad range of dissimilar languages and symbols.
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