Linux Bash Arithmetic Expressions Question:
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Which command removes a directory from directory stack?
a) dirs
b) popd
c) pushd
d) rm

Answer:

b) popd

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Which command puts a script to sleep untill a signal is recieved?
a) sleep
b) suspend
c) disown
d) break
Which option of the kill command sends the given signal name to the specified process?
a) -l
b) -n
c) -s
d) -a