NDG LINUX CHAPTER 8

NDG Linux Essentials - CISCO Networking Academy - Questions and Answers

CORRECT - See section 8.4.5

Channel 2 is:

• STDERR

CORRECT - See section 8.4.4

Which of the following commands will append its output to output.file?

• echo Testing >> output.file

CORRECT - See section 8.11

The grep command...

• ...will display all the lines in a file containing the specified Regular Expression.

CORRECT - See section 8.12.4

Which of the following commands will display only lines that begin with start?

• grep ^start file.txt

WRONG - See section 8.6

Which of the following commands can be used to scroll through a text file?

• more
• cat

CORRECT - See section 8.10

Which option for the cut command is used to specify a delimiter?

• -d

CORRECT - See section 8.10

Which option for the cut command is used to specify the field?

• -f

CORRECT - See section 8.9

Which option for the wc command will print the number of lines in a file?

• -l

CORRECT - See section 8.4.4

The command echo "text" > file.txt will not overwrite file.txt if it already exists.

• False

CORRECT - See section 8.4.4

The command echo "text" >> file.txt will not overwrite file.txt if it already exists.

• True

CORRECT - See section 8.4.4

The command echo "text" > file.txt will not overwrite file.txt if it already exists.

·         False

ORRECT - See section 8.4.2

A successful command will print output to STDOUT.

·         True

CORRECT - See section 8.4.5

Which of the following commands will direct error messages to the file, error.log?

·         ls /root 2> error.log

CORRECT - See section 8.11

The grep command...

·         ...will display all the lines in a file containing the specified Regular Expression.

CORRECT - See section 8.13

Which of the following commands will display lines that contain either start or end?

·         egrep 'start|end' file.txt

CORRECT - See section 8.5

The find command can search for files based on the size of the file.

·         True

CORRECT - See section 8.5

Which of the following commands scans the file to determine file locations?

·         find

CORRECT - See section 8.3

Which command can be used to print line numbers?

·         nl