Saturday, 13 June 2015

74. Which of the following commands would return proc ess_id of sleep command ?

(A) Sleep 1 and echo $?
(B) Sleep 1 and echo $#
(C) Sleep 1 and echo $×
(D) Sleep 1 and echo $! 
Answer D
(B) Sleep 1 and echo $#
(C) Sleep 1 and echo $
×
(D) Sleep 1 and echo $!
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