Unix Quiz

1. Which one of the following is not an environment variable?

env
Path
Home
User

2. Which command is used to prints a file onto paper as opposed to the screen display?

lp
lpr
Both A and B
None of the above

3. Many versions of Unix include two powerful text formatters ,_____and________.

nroff, proff
nroff, froff
nroff, sroff
nroff, troff

4. We can redirect the error message to file named newfile using __________ command.

cat foo errorfile
cat foo >errorfile
cat errorfile>foo
cat foo 2>errorfile

5. If there are special characters in a pattern, then we've to enclose them in ______

single quotes
double quotes
Without any quotes
None of the above

6. In UNIX there are ___ major types of shells.

2
3
4
5

7. what is the syntax to access array values?

${array_name[index]}
#{array_name[index]}
$${array_name[index]}
$[array_name{index}]

8. What is a daemon?

process whose parent has died
process who has completed its execution but still has an entry in the process table
process which is running infinitely
process which runs automatically without any user interaction

9. Which number is assign to read permission in Octal Permission Representation?

0
1
2
4

10. How many stream Unix program has?

2
3
4
5