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Which one of the following is NOT a standard Linux command.
smac
mkdir
grep
kill
"SMAC" is a networking program that enables users to change MAC addresses and automatically restart the network adapter when necessary, among other features--it is not a linux command.
Valid Linux commands:
"grep" = search for a given string in a file (case in-sensitive search).
"mkdir" = make directory.
"kill" = terminates a running Linux process.
REFERENCE: http://www2.cose.isu.edu/~yjkim/course/2013springlinux/manual-others/basic-linux-commands50mostfrequency_used.pdf
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