Workbook 7 Chap 1

Question 1

In Linux, programs can generally be grouped into three designs. What are they? [3]

Answer 1

1. Graphical Programs
2. Screen Programs
3. Terminal Programs

Question 2

What are stdin and stdout usually connected to? [4]

Answer 2

Usually, stdin and stdout are connected to the terminal that runs the command.

Question 3

How do you redirect output to a file? [4]

Answer 3

The bash shell uses > to redirect a process’s stdout stream to a file.

Question 4

How do you append output to a file? [4]

Answer 4

To append a command’s output to a file, rather than clobbering it, bash uses&raquo_space;.

Question 5

How do you redirect input? [5]

Answer 5

bash uses < to cause them to read input from somewhere other than the keyboard.

Question 6

What are the file descriptors for 
(i) stderr, 
(ii) stdin 
(iii) stdout
 [6]

Answer 6

i) 0
ii) 1
iii) 2

Question 7

How can you examine the open files and file descriptors of a currently running process whose
PID is 12345? [7]

Answer 7

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