CORRECT TEXT
When typing a long command line at the shell, what single character can be used to split a command across multiple lines?
正解:
\
質問 2:
Which of the following commands can be used to create a file?
A. create
B. build
C. nico
D. touch
E. mkfile
正解:D
質問 3:
When a new user is added, where does the user ID get stored?
A. /etc/realm
B. /etc/shpasswd
C. /etc/users
D. /etc/pass
E. /etc/passwd
正解:E
質問 4:
Which of the following is a combined audio/video interface for transmission of digital data?
A. DVD
B. ATI
C. HDMI
D. VGA
E. DVI
正解:C
質問 5:
The output of the program date should be saved in the variable actdat. What is the correct statement?
A. date | actdat
B. date > $actdat
C. actdat=date
D. actdat=`date`
E. set actdat='date'
正解:D
質問 6:
Which command will display running process information in real time?
A. process
B. top
C. show current
D. ps current
正解:B
質問 7:
How is it possible to determine if an executable file is a shell script which is read by Bash?
A. /bin/bash has to be run in debug mode.
B. The file must end with .sh.
C. The first line starts with #!/bin/bash.
D. The r bit is set.
E. Scripts are never executable files.
正解:C
質問 8:
How can the normal output of a command be written to a file while discarding the error output?
A. command >2>file 1&>/dev/null
B. command >file 2>/dev/null
C. command < output > /dev/null
D. command > /dev/null 2&>1 output
E. command > discard-error > file
正解:B
铃木** -
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