KALYANI GOVERNMENT ENGINEERING COLLEGE
Department of Computer Science & Engineering
OPERATING SYSTEM (PCC-CS592) LAB ASSIGNMENT - 1
NAME – BIDISHA SARKAR
ROLL NUMBER – 10200222028
YEAR – 3RD
SEMESTER – 5TH
DATE – 15-08-2024
INDEX
SL NO. TOPIC PAGE NO.
1. Show the logged in user. 1
2. Display the information about the user. 1
3. Show current uptime. 1
4. Show CPU information. 1
5. Show Memory information. 2
6. Show kernel information. 2
7. Show the disk usage. 3
8. Show directory space usage. 3
9. Show memory and swap usage. 3
10. Create two directories. 4
11. Enter into a directory. 4
12. Create a file using Cat command, write few lines, and exit. 4
13. Display the file. 4
14. Copy the file and paste it to the other directory. 5
15. Move the file and paste it to the other directory. 5
16. Append few lines in that file using redirection operator. 5
17. Remove the file. 5
18. Remove the empty directory. 6
19. Remove the other directory which contains the file without 6
removing it.
20. Show the difference between ls –l and ls –a. 6
21. Explain and show the significance of ls –l | cat > 7
student.txt.
22. Create tar named file.tar containing file. Extract the files 7
fromfile.tar
23. Logout current session. 7
24. Machine Shutdown. 7
1. Show the logged in user.
COMMAND: whoami
This command displays the username of the current logged-in user.
OUTPUT:
2. Display the information about the user.
COMMAND: id
This command shows user ID (UID), group ID (GID), and the groups the user belongs
to.
OUTPUT:
3. Show current uptime.
COMMAND: uptime -p
This command displays the current time, how long the system has been running,
how many users are logged in, and the load average.
OUTPUT:
4. Show CPU information.
COMMAND: lscpu
This command provides detailed information about the CPU architecture,
includingthe number of CPUs, cores, threads, model name, and speed.
1
OUTPUT:
5. Show Memory information.
COMMAND: top
This command shows the total, used, and available memory (RAM) on the system in
a human-readable format.
OUTPUT:
6. Show kernel information.
COMMAND: uname -r
This command shows the version number of the Linux kernel.
2
OUTPUT:
7. Show the disk usage.
COMMAND: df -P
This command displays the disk space usage of file systems in a human-readable
format.
OUTPUT:
8. Show directory space usage.
COMMAND: du -h
This command shows the disk usage of files and directories within the current
directory in a human-readable format.
OUTPUT:
9. Show memory and swap usage.
COMMAND: free -m
This command is used for showing memory information also displays swap usage.
OUTPUT:
3
10. Create two directories.
COMMAND: mkdir dir_name1 dir_name2
This command creates two directories named dir_name1 and dir_name2.
OUTPUT:
11. Enter into a directory.
COMMAND: cd dir_name
This command changes the current directory to dir_name.
OUTPUT:
12. Create a file using Cat command, write few lines, and exit.
COMMAND: cat > file_name.txt
After running this command, type the lines you want to write in the file and press
Ctrl+D to save and exit.
OUTPUT:
13. Display the file.
COMMAND: cat file_name.txt
This command displays the content of the file_name.txt.
OUTPUT:
14. Copy the file and paste it to the other directory.
COMMAND: cp file_name.txt ../dir_name/
This command copies the file_name.txt from dir_name1 to dir_name2.
4
OUTPUT:
15. Move the file and paste it to the other directory.
COMMAND: mv file_name.txt ../dir_name/
This command moves file_name.txt from dir_name1 to dir_name2.
OUTPUT:
16. Append few lines in that file using redirection operator.
COMMAND: echo "Additional lines" >> ../dir_name/file_name.txt
This command appends "Additional lines" to the file_name.txt in dir_name.
OUTPUT:
17. Remove the file.
COMMAND: rm -r file_name.txt
This command removes file_name.txt from dir_name.
OUTPUT:
18. Remove the empty directory.
COMMAND: rmdir dir_name
This command removes the empty directory dir_name.
5
OUTPUT:
19. Remove the other directory which contains the file
withoutremoving it.
COMMAND: rm -r dir_name
This command removes dir_name and all its contents.
OUTPUT:
20. Show the difference between ls –l and ls –a.
DIFFERENCE:
• ls -l
Lists files in long format, showing file permissions, number of links, owner,
group, size, and timestamp.
• ls -a
Lists all files including hidden files (those starting with .).
OUTPUT:
21. Explain and show the significance of ls –l | cat > student.txt.
EXPLANATION: This command lists files in long format and then redirects the
output to student.txt using a pipe (|) and the redirection operator (>). The
contentof student.txt will now be the result of ls -l.
6
22. Create tar named file.tar containing file. Extract the files
fromfile.tar
COMMANDS:
• tar -cvf file.tar file.txt
This command creates a tar archive named file.tar containing file.txt.
• tar -xvf file.tar
This command extracts the contents of file.tar.
OUTPUT:
23. Logout current session.
COMMAND: logout
This command logs out from the current session.
OUTPUT:
24. Machine Shutdown.
COMMAND: sudo shutdown now
This command shuts down the machine immediately.
OUTPUT:
