1.What output will the following command seq 10 produce?

　　A.A continuous stream of numbers increasing in increments of 10 until stopped.

　　B.The numbers 1 through 10 with one number per line.

　　C.The numbers 0 though 9 with one number per line.

　　D.The number 10 to standard output.

　　Answer: B

　　2.Which command allows you to make a shell variable visible to subshells?

　　A.export $VARIABLE

　　B.export VARIABLE

　　C.set $VARIABLE

　　D.set VARIABLE

　　E.env VARIABLE

　　Answer: B

　　3.Which bash option will prevent you from overwriting a file with a ">"?

　　A.set -o safe

　　B.set -o noglob

　　C.set -o noclobber

　　D.set -o append

　　E.set -o nooverwrite

　　Answer: C

　　4.What output will the following command produce?

　　seq 1 5 20

　　A.1 6 11 16

　　B.1 5 10 15

　　C.1 2 3 4

　　D.2 3 4 5

　　E.5 10 15 20

　　Answer: A