Your shell script uses an "if" statement to see if the word "yes" was entered. This "if" statement looks like:
A. if ( $RESPONSE = "yes" ) ; then
B. if [ RESPONSE = "yes" ) ; then
C. if [ $RESPONSE == "yes" ] ; then
D. if ( RESPONSE = "yes" ) ; then
查看答案
Why should we use shell scripts?
A. They combine long, possibly repetitive commands into one simple command
B. They allow you to create new commands and share these procedures among several users
C. They automate tasks and reduce risk of errors
D. All of the above
Which of following could you use to check the status of all your printers?
A. status –a
B. lp status –all
C. lprm my-printers
D. lpstat –a
The command wc –l some_file will print out the number of:
A. lines in some_file
B. words in some_file
C. characters in some_file
D. bytes in some_file
How would you use sed to replace all the occurrences of the word "tiger" with "lion" in the file named "data"?
A. sed ‘s/tiger/lion/’ data
B. sed ‘s/lion/tiger/’ data
C. sed -i ‘s/tiger/lion/g’ data
D. sed –i ‘r/lion/tiger/’ data
微信支付 
支付宝支付