Class 12 Quiz Flashcards
By default, where does Standard Input come from?
the keyboard
By default, where does Standard Output go?
to the screen
By default, where does Standard Error go?
to the screen
If you wanted to send the output of ls to the file dir_listing.txt, what would you enter at the command line?
ls > dir_listing.txt
If you wanted the program do_something to take input from the file data.txt what would you write at the command line?
do_something < data.txt
If you wanted to run the program do_something but have no output appear on the screen, or be sent to a file, what would you type at the command line?
do_something > /dev/null
If you wanted to add the output of who to the file logged_on.txt what would you type at the command line?
who »_space; logged_on.txt
If a program does not specify where its input comes from, where would it come from?
from Standard Input
If a program does not specify where its output goes to, where would it go?
to Standard Output
Where does a program send its error messages?
to Standard Error
