11374810
Beschreibung
Quiz von brayhan gutierrez cespedes, aktualisiert more than 1 year ago
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Erstellt von brayhan gutierrez cespedes
vor etwa 7 Jahre
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Frage 1
Frage
Error messages generated by commands are sent where by default?
Antworten
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Log files
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STDOUT
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STDERR
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STDIN
Frage 2
Frage
A successful command will print output to STDOUT.
Antworten
- True
- False
Frage 3
Frage
Which of the following commands will direct error messages to the file, error.log?
Antworten
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ls /root >> error.log
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ls /root 2> error.log
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ls /root $> error.log
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ls /root > error.log
Frage 4
Frage
A pipe allows you to…
Antworten
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…send the same input to multiple commands.
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…type multiple commands at one prompt.
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…send the output of one command to another.
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…send the output of a command to a file.
Frage 5
Frage
Channel 2 is:
Antworten
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STDIN
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STDALL
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STDOUT
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STDERR
Frage 6
Frage
Which of the following commands will append its output to output.file?
Antworten
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echo Testing > output.file
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echo Testing >> output.file
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output.file < echo Testing
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echo Testing -> output.file
Frage 7
Frage
Which command(s) can be used to sort the lines of list.file alphabetically and display it on the screen?
Antworten
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sort < list.file
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cat list.file | sort
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cat list.file >> sort
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echo list.file > sort
Frage 8
Frage
Which option of the head command will display only the first five lines of a file?
Antworten
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-l 5
-
No option needed; head displays only five lines by default.
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-n
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-n 5
Frage 9
Frage
The grep command…
Antworten
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…will display all the lines that begin with the specified Regular Expression.
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…is not case sensitive.
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…will display all the lines in a file containing the specified Regular Expression.
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…will display the line numbers in a file that contain a specified Regular Expression.
Frage 10
Frage
The grep command can be used with glob characters.
Antworten
- True
- False
Frage 11
Frage
Which of the following commands will display only lines that begin with start?
Antworten
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grep *start file.txt
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grep $start file.txt
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grep start file.txt
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grep ^start file.txt
Frage 12
Frage
Which of the following commands will display only lines that begin with test?
Antworten
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grep ^test file.txt
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grep $test* file.txt
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grep *test file.txt
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grep &test file.txt
Frage 13
Frage
Which of the following commands will display lines that contain either start or end?
Antworten
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egrep start end file.txt
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egrep ‘start|end’ file.txt
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egrep start&end file.txt
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egrep (start|end) file.txt
Frage 14
Frage
Which of the following commands can be used to scroll through a text file?
Antworten
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some
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less
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cat
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more
Frage 15
Frage
The find command can search for files based on the size of the file.
Antworten
- True
- False
Frage 16
Frage
Which of the following commands scans the file to determine file locations?
Antworten
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search
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locate
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where
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find
Frage 17
Frage
Which option for the cut command is used to specify a delimiter?
Antworten
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-f
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-d
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=
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-D
Frage 18
Frage
Which option for the cut command is used to specify the field?
Antworten
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-D
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-f
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-d
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#
Frage 19
Frage
Which option for the wc command will print the number of lines in a file?
Antworten
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-l
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-w
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-C
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-L
Frage 20
Frage
Which option for the wc command will print the total number of words in a file?
Antworten
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-l
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-L
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-C
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-w
Frage 21
Frage
Which command can be used to print line numbers?
Antworten
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num
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sort
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ln
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nl
Frage 22
Frage
The command echo “text” > file.txt will create file.txt if it does not already exist.
Antworten
- True
- False
Frage 23
Frage
The command echo “text” > file.txt will not overwrite file.txt if it already exists.
Antworten
- True
- False
Frage 24
Frage
The command echo “text” >> file.txt will not overwrite file.txt if it already exists.
Antworten
- True
- False
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