Linux Chapter 8
which option for the cut command is used to specify a delimiter
-d
which option for the cut command is used to specify the field
-f
which option for wc command will print the number of lines in a file
-l
Which option of the head command will display only the first five lines of a file
-n 5
which option for the wc command will print the total number of words in a file
-w
which of the following commands will display only lines that begin with start?
Grep ^start file. txt
Channel 2 is
STDERR
Error messages generated by commands are sent where by default?
STDERR
The grep command can be used with glob characters
TRue
A successful command will print out put to STDOUT
True
Which of the following commands will append its output to output.file?
echo Testing >> output.file
which of the following command will display lines that contain either start or end
egrep 'start|end'file.txt
the command echo "text" > file.txt will not overwrite file.txt if it already exists.
false
which of the following commands scans the file to determine file location
find
which of the following commands will display only lines that begin with test
grep ^test file.txt
which of the following commands can be used to scroll through a text file
less more
which command can be used to print line numbers
nl
A pipe allows you to
send the output of one command to another
Which command(s) can be used to sort the lines of list.file alphabetically and display it on the screen?
sort < list.file cat list.file | sort
the command echo "text" > file.txt will create file.txt if it does not already exist.
true
the command echo "text" >> file.txt will not overwrite file.text if it already exists
true
the find command can search for files based on the size of the file
true
The grep command
will display all the lines in a file containing the specified Regular Expression
Which of the following commands will direct error messages to the file, error.log?
✔ ls /root 2> error.log