3. Data Streams and piping in linux Flashcards
1
Q
What are the data streams when a process is running?
A
- STDIN
- STDOUT
- STDERR
2
Q
What does STDIN stand for?
A
Standard Input.
3
Q
What does STDOUT stand for?
A
Standard Output.
4
Q
What does STDERR stand for?
A
Standard Error.
5
Q
Command >
A
This is the forward command for STDOUT data stream.
6
Q
Command cat
A
Read the content of a file.
7
Q
command 2>
A
This is the forward command for STDERR data stream.
8
Q
Numeric Id’s of the process data streams ?
A
0 - STDIN
1 - STDOUT
2 - STDERR
9
Q
Command»_space;
A
This is the appending command for STDOUT data stream.
10
Q
What is piping used for?
A
Sending data from a STDOUT process to a STDIN of another process.
11
Q
Can I use piping with STDERR? (Yes or No)
A
No
12
Q
Command |
A
This is the piping command.
13
Q
Command echo
A
Print text to the terminal.
