Unix Quiz - 1
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Unix Quiz
- 1.In Bourne shell, you have to EXPORT the declared environmental variables.
- A.
True
- B.
False
- 2.What does "../.." stand for ?
- A.
Current directory
- B.
Up one directory
- C.
Up two directories
- D.
None of Above
- 3.What does cd/ mean in UNIX?
- A.
Current directory
- B.
Root directory
- C.
Up one directory
- D.
None of the above
- 4.Which variable gives the exit status of the last command executed in the shell?
- A.
$*
- B.
$!
- C.
$?
- D.
$@
- 5.How will you assign the value of variable var2 to var1?
- A.
Var1=var2
- B.
$var1=$var2
- C.
Var1=$var2
- D.
$var1=var2
- 6.In UNIX, it is possible for more than one file descriptor to point to same file.
- A.
True
- B.
False
- 7.Which of these is true about assign a null value to the variable in bash?
- A.
A=""
- B.
A=
- C.
A=''
- D.
All of above
- 8.Command to change owner of the file in UNIX.
- A.
Chowner
- B.
Chown
- C.
Both
- D.
None
- 9.How many prompts are available in a UNIX system?
- A.
One
- B.
Two
- C.
Three
- D.
Zero
- 10.
- A.
The shell keeps the end users from accessing the kernel for security reasons.
- B.
The shell protects the kernel from the shortcomings of the user.
- C.
The shell allows the user to do things that the kernel could not accommodate.
- D.
All of above
- 11.
- A.
Grep 2011 | diff a1.txt a2.txt
- B.
Diff a1.txt a2.txt
- C.
Diff a1.txt a2.txt | grep 2011
- D.
None of above
- 12.What is the command to display environment variables?
- A.
DISPLAY ENV
- B.
PRINT ENV
- C.
DISPENV
- D.
PRINTENV
- 13.Output of the following: $ v= 'ls' $ echo $v
- A.
List all files
- B.
Ls
- C.
Error
- 14.Which one is not the environment variable?
- A.
PATH
- B.
RANDOM
- C.
READ
- D.
DISPLAY
- 15.
- A.
Kernel
- B.
Shell
- C.
Both
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