Ch10 Standard Text Streams and Redirection Exam

Ch10 Standard Text Streams and Redirection Exam

1. If you want to append content to a file with the normal output of a command, you can use:

   • >
   • >>
   • 1>
   • 2>>

2. If you want to overwrite a file by redirecting the output of a command, you can use:

   • }
   • >
   • |
   • &

3. Many commands that read text files will also read from this stream:

   • stdcon
   • stderr
   • stdout
   • stdin

4. This stream is the output of a command operating normally:

   • stderr
   • stdout
   • stdin
   • stdnorm

5. To redirect the errors that are output by a command, you can use:

   • 2&
   • 2
   • 2>
   • 2@

6. To send the normal and error output of a command to a single file, you can use:

   • 2>
   • >
   • 2>&1
   • 1>&

7. Two or more commands combined with the vertical bar | character between them form a:

   • streamline
   • command line
   • pipeline
   • outputline

8. Which of the following commands will take the standard error of the echo command cmd1 and put it into the /tmp/output.txt file:

   • echo | /tmp/output.txt
   • echo > /tmp/output.txt
   • echo 2> /tmp/output.txt
   • echo 2 | /tmp/output

9. Which of the following commands will take the standard output of the echo command and put it into the /tmp/output.txt file:

   • echo | /tmp/output.txt
   • echo 2> /tmp/output.txt
   • echo > /tmp/output.txt
   • echo 2 | /tmp/output

10. Which two symbols can effectively send stdin to a command?

    (choose two)

    • >
    • !
    • <
    • |

11. Which command can be used to send the output of a command to both stdout and a file:

    • ls 2 | /tmp/output
    • ls | /tmp/output.txt
    • ls | tee /tmp/output.txt
    • ls | echo /tmp/output.txt

12. In a command pipeline, the output of one command is sent to another command as output.

    True or False?

    • True
    • False