linux practical exam Digvajiya collage Rajnandgaon

Operating System With Linux
2023-24
Yashwant Tandekar (BCA 3 rd
SEM) 1 | P a g e
Q.1 Change your shell environment– PATH, HOME, IFS, MAIL, PS1, PS2,
TERM, LOGNAME.
i) at command line
ii) at shell level
iii) at login level
Answer :-
i) At Command Line -
 First we check our current working shell .
 We are currently using “ bash ” Shell .
 For this shell we will use following syntax for changing variable :-
 export variable_name = value
Q.2 Change the wallpaper, screensaver in GNOME, KDE .
Answer :-
 Changing Wallpaper :-
 Right - click on your desktop background and select “ change background
” option.

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SEM) 2 | P a g e
 Now select your favourite wallpaper as you want.
 At last press on enter your wallpaper is changed .
 Changing Screensaver :-
 Go to “ Setting Option ” in your desktop window .
 Then click on “ privacy ” and choose “ Screen Lock ” .
 At last configure the screen lock time as you want .

2023-24
SEM) 3 | P a g e
Q.3 Install Linux with following specifications – username, password,
partitions for various directories such as /etc, /home, etc.
Answer :-
For this Assignment we will install “ Ubuntu Linux 22.04 ” version and the installing
process should be start like this :
 Boot the system with the Ubuntu – ISO bootable file.
 Now click on “install Ubuntu”.
 Select the language & region(country).
 Enter the host name then the user name.

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SEM) 4 | P a g e
 Enter a password and confirm it.
 Select disk partition method “ manual ” or “ Something else”.
 Create a root (/) , home & swap area partition.
sagar
yashwant

2023-24
SEM) 5 | P a g e
 Click on continue and finish the installation.
 Now enter username & password, and login.
Q.4 . Add a user and password, change the password .
Answer :-
 For making user and password :-
 Open terminal .
 Login as “ Super user ” .
 Then write following commands -- adduser user_name
 Now set the password for new user .
yashwant

2023-24
SEM) 6 | P a g e
 For Changing password :-
 Open terminal .
 Login as “ Super user ”
 Then write following commands -- passwd user_name
 Now set the new password for user ( admin can change the
password of any user) .
Q. 5 Add & remove a group .
Answer :-
 For adding group :-
 Open terminal .
 Then write following commands – addgroup groupe_name

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SEM) 7 | P a g e
 For deleting group :-
 Open terminal .
 Then write following commands -- groupdel groupe_name
Q. 6 Create partitions on your disk.
Answer :-
 Go to System  Hardware Disks.
 Click on the partition to split it.
 Click on “Additional partition options” and select “resize”.

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SEM) 8 | P a g e
 Select the size required.
 Click on resize enter password and press “Enter”
Q.7 Install and configure printer .
Answer :-
 Open terminal then run the code for installing the printer setup.
 We have to install CUPS(Common Unix Printer System)
 lata@ubuntu18:-$ sudo apt update
 lata@ubuntu18:-$ sudo apt-get install cups
 Go to Setting and select “Printers”.
 Click on add.
P.T.O.

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SEM) 9 | P a g e
 Select ‘Generic CUPS-BRF’ and forward.
 Select printer name and driver.
 At last print a test page .

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SEM) 10 | P a g e
-: Using VI editor :-
Q .8 In a file :-
i) Replace the words ‘has’ with ‘has not’.
Answer :-
 Go to terminal then type “vi file_name” you can take file name as you
want then press enter. Eg. – vi ass1
 To get into insert mode, press ‘esc’ then press ‘I ’ and write some
text which contains ‘has’.
 Press ‘Esc’ button to go in colon mode and type - : %s / has / has
not
 At last press enter .

2023-24
SEM) 11 | P a g e
ii) locate nth
character.
Answer :-
I am locating ‘S’ Character :
 Go to terminal then create or open a new vi file eg. – vi ass
 Press “ I ” , In Insert Mode Write some sentences .
 Press ‘Esc’ button to go in colon mode and type - /S
 Cursor pointing the ‘ S ’ character .
iii) Sort lines 21 to 40.
Answer :-
 Go to terminal then create or open a new vi file eg. – vi ass3
 Press “ I ” , In Insert Mode Write about 40 sentences .

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SEM) 12 | P a g e
 Press ‘Esc’ button to go in colon mode and type - :21,40 ! sort
 At last press enter .
Q. 9 In a file copy/cut and paste following text :-
i) At ith
line, n lines to jth
line :
Answer :-
In this assignment we copy 1 to 4 line to 8 line
 Press ‘Esc’ button twice and then type - 4yy

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SEM) 13 | P a g e
 4 lines copied and then press “ p ” to paste the copied text at your
required cursor position (8th
line).
 At last the sentence will be paste at 8 th
Line .
ii) Yank a few words :
Answer :-
 move the cursor on that word you want to Yank or Copied
 press “ ESC ” and type - 4yw [It will copy / yank 4 words]
 At last press “ p ” for pasting the yanked word .
iii)Cut and paste n words to i position in j line :
Answer :-

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SEM) 14 | P a g e
 move the cursor on that word you want to cut or delete.
 press “ ESC ” and type – 8dw [It will cut 4 words]
 At last press “ p ” for pasting the cut word .
Q. 10 Open to files ‘txtfile’ and ‘newfile’ and copy/cut 5 lines from ‘txtfile’
and paste them in ‘newfile’ using vi editor.
Answer :-
 Go to terminal and create both files which is mentioned in question – vi txtfile
and vi newfile.
 In “txtfile” press “ ESC ” and then “I”.
 Now write some sentences .
 Press “esc” and then type – 5yy [copy 5 lines]

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SEM) 15 | P a g e
 Then type :n to go to the “newfile” in vi .
 In newfile press ‘esc’ and then ‘p’ .
Q.11 Open 'txtffile' and copy/cut following and paste to the 'newfile
i. I th
to the last line in it
Answer :-
 Go to terminal and create both files which is mentioned in question – vi txtfile
and vi newfile.
 In “txtfile ”Press “esc” to go to colon mode and then type – :3,$ w! newfile
 Then open “vi newfile” .
 The copied line is already paste in “newfile” .
Q. 12 Create Macro :-
i. To paste your name at any position in the file.

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SEM) 16 | P a g e
Answer :-
 Open terminal and create a file using vi eg. – vi ass7
 In command mode type qy to record a macro named y.
 Type your name in insert mode.
 Press q in command mode, to stop recording.
 Now type “@s” anywhere in the file to use macro and your name will be typed
automatically.
ii. To remove all leading spaces in a file.
Answer :-
@y

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SEM) 17 | P a g e
 Press “ I ” , In Insert Mode Write some sentences with paragraph space .
 Press “esc” in colon mode type - :map S :g/^$/d.
 Then press “esc”
 At last type “ S ” to remove all leading spaces in file .
iii. To save and quit vi editor in input mode.
Answer :-
 In command mode type qd to record a macro named d.
 Press “esc” in colon mode type - :wq [To save and quit file]
 Press “esc”
 Then press q in command mode, to stop recording.
 Now type “@d” anywhere in the file to use macro

2023-24
SEM) 18 | P a g e
:- Write commands :-
Q. 13 List all files that match a class .
Answer :-
 Open Terminal and write following commands :-
 ls *.sh
Q. 14 List all files that do not match a class.
Answer :-
 ls --ignore=*.bash { this command ignores all .bash files }
Q. 15 Change the fill permissions .
Answer :-
In this assignment first we check all “ .bash ” extension files Permission
 ls - l *.bash

2023-24
SEM) 19 | P a g e
 Now we Change the permission of “.bash” files with the following
command :-
 chmod 761 *.bash
( Here 7 is – read , write , execute permission for User
6 is – read and write permission for group
1 is – read permission for other )
 Press “Enter” the file permission will be changed .
Q. 16 Configure or set characteristics of your terminal.
Answer :-
Changing the promt Colour :
 Open File manager and search file – “bashrc”.
 Select the file and open it .
 In file you can change the promt colour at “Color promt” Section (line
number - 59)
 To change the promt colour write colour code

2023-24
SEM) 20 | P a g e
 After selecting color write the color code on Highlighted line of “ If block ”
of “Color promt” Section.
 Now Save the file and exit .
 At last open Terminal , here you see that your promt colour will be changed
as per your choice .
Q. 17 Display the lines in a file that contain a particular word.
Answer :-
 To see a file in Terminal write the following command – cat file_name
 Eg. – cat YTB
 Then write grep command to find the particular word in a file , the command
is as follows : grep ‘some’ YTB

2023-24
SEM) 21 | P a g e
Q.18 Append the contents of two files in a file JABC.
Answer :-
 Open Terminal and create 2 files in vi editor eg. – file1 , file2
 To see the file in Terminal write the following command – cat file_name
 To Append the contents of 2 files in 1 file [JABC] write following command
 cat file1 file2 >> JABC
 At last to see the append file type – cat JABC.
Q. 19 Count the number of files in a directory.
Answer :-
 ls -f -l | wc -l (it is for counting all files in root/ directory )

2023-24
SEM) 22 | P a g e
:- Shell Programs :-
Q. 1 Display all the users currently logged in detail with colim headers.
Answer :-
 open the “text editor” and write the Shell Program .
Coding:-
 Now open “ Terminal ” .
 Then make the Bash file executable with the help of following command :
 chmod +x file_name
Code Run :-
P.T.O.
20

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SEM) 23 | P a g e
Q. 2 List all files in current directory and save the list in a file ABC. Also
save the contents of the files in ABC and display the contents in ABC in
sorted order.
Answer :-
 Open the “text editor” and write the Shell Program .
Coding:-
Code Run :-
21

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SEM) 24 | P a g e
Q. 3 Sort the contents of a file ABC and save it in OABC.
Answer :-
Coding:-
Code Run :-
22

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SEM) 25 | P a g e
Q. 4 Display all the users currently logged in detail with column headers.
Answer :-
Coding:-
Code Run :-
P.T.O.
23

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SEM) 26 | P a g e
Q. 5 To save current date & time, number of files & directories in the current
directory and content of all the files to a single NFL.
Answer :-
Coding:-
Code Run :-
Q. 6 To input a number and test whether it is +ve, -ve, or zero.
Answer :-
Coding:-
24
25

2023-24
SEM) 27 | P a g e
Code Run :-
Q. 7 To test whether a filename is a regular file or a directory or of other
type.
Answer :-
Coding:-
26

2023-24
SEM) 28 | P a g e
Code Run :-
Q. 8 To list only the directories in current path.
Answer :-
Coding:-
Code Run :-
27

2023-24
SEM) 29 | P a g e
Q. 9 To print the greatest of three numbers.
Answer :-
Coding:-
Code Run :-
28

2023-24
SEM) 30 | P a g e
Q. 10 To print 12 terms of Fibonacci series.
Answer :-
Coding:-
Code Run :-
P.T.O.
29

2023-24
SEM) 31 | P a g e
Q.11 To display all users currently logged in & also check a particular user
every 30 seconds until he logs in.
Answer :-
Coding:-
Code Run :-
P.T.O.
30

2023-24
SEM) 32 | P a g e
Q. 12 To save current date & time, number of files in the current directory
and contents of all the files matching a pattern to a single file NPFL.
Answer :-
Coding:-
Code Run :-
P.T.O.
31

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SEM) 33 | P a g e
Q. 13 To display particular messages depending on the weekday.
Answer :-
Coding:-
Code Run :-
P.T.O.
32

2023-24
SEM) 34 | P a g e
Q. 14 To display common messages for following group of days- Monday &
Wednesday, Tuesday & Thursday and Friday & Saturday and other day.
Answer :-
Coding:-
Code Run :-
P.T.O.
33

2023-24
SEM) 35 | P a g e
Q. 15 To accept a string from the terminal and echo a suitable message if it
doesn't have at least 9 characters.
Answer :-
Coding:-
Code Run :-
P.T.O.
34

2023-24
SEM) 36 | P a g e
Q. 16 Write a Shell Script to find the factorial of a number.
Answer :-
Coding:-
Code Run :-
P.T.O.
35

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SEM) 37 | P a g e
Q. 17 Write a Shell Script to swap numbers using third variable.
Answer :-
Coding:-
Code Run :-
P.T.O.
36

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SEM) 38 | P a g e
Q. 18 Write a Shell Script to print prime numbers between l to 20.
Answer :-
Coding:-
Code Run :-
P.T.O.
37

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SEM) 39 | P a g e
Q. 19 Write a Shell Script to greatest of three numbers.
Answer :-
Coding:-
Code Run :-
P.T.O.
38

2023-24
SEM) 40 | P a g e
Q. 20 Write a Shell Script to sort the contents of a file XYZ and save it in
BCAII.
Answer :- First make a file “ XYZ”.
Coding:-
Code Run :-
39

2023-24
SEM) 41 | P a g e
Q. 21 Write a shell script to display mathematical table of any number in
the format Ex:- 3*1=3.
Answer :-
Coding:-
Code Run :-
40

linux practical exam Digvajiya collage Rajnandgaon

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