STUPIDSID
1 (a)
With neat diagram, explain the architecture of UNIX operating system.
6 M
1 (b)
With the help of a diagram the parent-child relationship. Explain the UNIX file system.
6 M
1 (c)
Explain the following with examples:
i) Absolute and relative path names
ii) Internal and external commands.
i) Absolute and relative path names
ii) Internal and external commands.
8 M
2 (a)
A file's current permission are rw_r_xr. Specify the chmod expression required to change them for the following:
i) rwx rwx rwx
ii) r_ _ r_ _ _ _ _
iii) _ _ _ _ _ _ _ _ _
iv) _ _ _ r_ _ r_ _
using both relatives and absolute methods of assigning permissions.
i) rwx rwx rwx
ii) r_ _ r_ _ _ _ _
iii) _ _ _ _ _ _ _ _ _
iv) _ _ _ r_ _ r_ _
using both relatives and absolute methods of assigning permissions.
8 M
2 (b)
Explain briefly the file attributes listed using ls -l command.
6 M
2 (c)
What are the different modes of Vi editor? Explain with a diagram.
6 M
3 (a)
Explain the three standard files with respect to UNIX operating systems.
6 M
3 (b)
Explain the mechanism of process creation.
6 M
3 (c)
Explain the following command with an example:
i) Running jobs in background
ii) Execute later.
i) Running jobs in background
ii) Execute later.
8 M
4 (a)
Explain the following environment variables with examples:
i) SHELL
ii) LOGNAME
iii) PATH
i) SHELL
ii) LOGNAME
iii) PATH
6 M
4 (b)
Different between hard link and soft link in UNIX with examples.
6 M
4 (c)
Explain the following command with example:
i) tail
ii) paste
iii) tr
iv) pr
i) tail
ii) paste
iii) tr
iv) pr
8 M
5 (a)
With suitable example, explain the grep command and its various options.
8 M
5 (b)
Explain the line addressing and context addressing in sed with examples.
6 M
5 (c)
Explain the different ways of using test statements, with examples.
6 M
6 (a)
What is shell programming? Write a shell program that will do the following tasks in order:
Clear the screen
Print the current directory
Display current login users.
Clear the screen
Print the current directory
Display current login users.
8 M
6 (b)
Explain the shell features of 'while' and 'for' with syntax.
8 M
6 (c)
What is the 'exit' status of command and where is it stores?
4 M
7 (a)
What is AWK? Explain any three built in functions in AWK.
7 M
7 (b)
Write an AWK sequence to find HRA, DA and Netpay of an employee, where DA is 25% of basic and netpay is the sum of HRA, DA and basic pay.
7 M
7 (c)
Explain the list and arrays in PERL.
6 M
8 (a)
Explain the following storing handling functions of PERL with examples:
i) length ii) index iii) substr iv) reverse
i) length ii) index iii) substr iv) reverse
8 M
8 (b)
Write a PERL program to print numbers that are accepted from keyboard using while and array construct.
6 M
8 (c)
Explain the following in PERL with examples.
i) force each loping construct ii) join
i) force each loping construct ii) join
6 M
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