I/O Flashcards
(8 cards)
1
Q
How to redirect standard error?
A
sth 2> target
2
Q
What are 0>, 1>, 2> operators?
A
They redirect standard input, output and error respectively.
Alias for 1> is >
3
Q
How to redirect something to standard stream?
A
sth >&1 redirects sth to standard output by file descriptor reference(1)
4
Q
How to redirect both standard output and error?
A
sth &> target
5
Q
How to ignore error output of command?
A
command 2> /dev/null
6
Q
What does “cat” command do?
A
Read and concatenate file(s) and redirect to so
7
Q
What is the difference between > and | operator for redirecting output?
A
> operator redirects to file
| operator redirects to another command input
8
Q
What does “tee” command do?
A
Redirect received input to file and pass it also to standard output to proceed in pipeline
