Top 50 Linux Commands for Administrator?

Maruti Kr. — Wed, 17 Jan 2024 10:56:27 +0000

Linux commands cover a variety of tasks, from system monitoring to file management and user administration. Here’s a list of 50 Linux commands that are commonly used by administrators.

S.No.	Linux Command	Use of these command
1.	pwd	Print current working directory.
2.	ls	List directory contents.
3.	cd	Change directory.
4.	cp	Copy files or directories.
5.	mv	Move or rename files or directories.
6.	rm	Remove/delete files or directories.
7.	mkdir	Create a new directory.
8.	rmdir	Remove an empty directory.
9.	touch	Create an empty file or update the access/modification time.
10.	cat	Display the contents of a file.
11.	less	View file contents one screen at a time.
12.	grep	Search for a pattern in files.
13.	find	Search for files and directories.
14.	chmod	Change file permissions.
15.	chown	Change file owner and group.
16.	ps	Display information about running processes.
17.	top	Display and update sorted information about system processes.
18.	kill	Terminate a process.
19.	killall	Kill processes by name.
20.	df	Display disk space usage.
21.	du	Show disk usage of files and directories.
22.	free	Display amount of free and used memory in the system.
23.	uname	Print system information.
24.	ifconfig	Configure network interfaces.
25.	ping	Test network connectivity.
26.	traceroute	Trace the route that packets take to reach a network host.
27.	netstat	Display network connections, routing tables, and more.
28.	route	Show and manipulate the IP routing table.
29.	iwconfig	Configure wireless network interfaces.
30.	hostname	Show or set the system’s host name.
31.	date	Display or set the system date and time.
32.	cal	Display a calendar.
33.	tar	Archive files.
34.	gzip	Compress or decompress files.
35.	wget	Download files from the internet.
36.	ssh	Connect to a remote server securely.
37.	scp	Copy files between machines over SSH.
38.	rsync	Synchronize files and directories.
39.	passwd	Change user password.
40.	useradd	Create a new user.
41.	userdel	Delete a user account.
42.	groupadd	Create a new group.
43.	groupdel	Delete a group.
44.	visudo	Edit the sudoers file safely.
45.	service	Control system services.
46.	systemctl	Control the systemd system and service manager.
47.	journalctl	Query and display messages from the journal.
48.	chkconfig	Update and query runlevel information for system services.
49.	lsof	List open files and processes that opened them.
50.	history	Display command history.

These commands cover a wide range of tasks and are essential for Linux administrators. Always make sure you understand the commands and their implications before using them, especially those that involve system changes.

The post Top 50 Linux Commands for Administrator? appeared first on Artificial Intelligence.

Top 50 Linux Commands for Users?

Maruti Kr. — Tue, 16 Jan 2024 09:38:12 +0000

Here are the top 50 Linux commands that are commonly used by users:

ls: List files and directories.

ls

2. pwd: Print the current working directory.

pwd

3. cd: Change directory.

cd [directory]

4. cp: Copy files or directories.

cp [source] [destination]

5. mv: Move or rename files or directories.

mv [source] [destination]

6. rm: Remove/delete files or directories.

rm [file]

7. mkdir: Create a new directory.

mkdir [directory]

8. rmdir: Remove an empty directory.

rmdir [directory]

9. touch: Create an empty file or update the access and modification times.

touch [file]

10. cat: Display the content of a file.

cat [file]

11. nano: Text editor for creating and editing files.

nano [file]

12. vi or vim: Another text editor.

vi [file]

13. echo: Display a message or a variable.

echo [message]

14. grep: Search for a pattern in a file.

grep [pattern] [file]

15. ps: Display information about active processes.

ps

16. kill: Terminate a process.

kill [process_id]

17. chmod: Change file permissions.

chmod [permissions] [file]

18. chown: Change file ownership.

chown [owner:group] [file]

19. man: Display the manual for a command.

man [command]

20. top: Display and update sorted information about processes.

top

21. df: Display disk space usage.

df

22. du: Display file and directory space usage.

du [options] [file or directory]

23. cpuspeed: Display and change CPU speed and voltage settings.

cpuspeed

24. uname: Display system information.

uname -a

25. ifconfig: Display and configure network interfaces.

ifconfig

26. ping: Test network connectivity.

ping [host]

27. traceroute: Trace the route to a network server.

traceroute [host]

28. wget: Download files from the internet.

wget [URL]

29. tar: Compress and decompress files.

tar -zxvf [file.tar.gz]

30. zip/unzip: Compress and decompress files in ZIP format.

zip [archive.zip] [files]
unzip [archive.zip]

31. ssh: Connect to a remote server securely.

ssh [user]@[host]

32. scp: Copy files between local and remote machines.

scp [file] [user]@[host]:[destination]

33. sudo: Execute a command with administrative privileges.

sudo [command]

34. apt-get or yum: Package management commands for installing, updating, and removing software packages.

sudo apt-get install [package]
sudo yum install [package]

35. lsblk: List information about block devices.

lsblk

36. mount/unmount: Mount or unmount filesystems.

mount [device] [mount_point]
umount [mount_point]

37. find: Search for files in a directory hierarchy.

find [directory] -name [filename]

38. uptime: Display how long the system has been running.

uptime

39. history: Display command history.

history

40. date: Display or set the system date and time.

date

41. cal: Display a calendar.

cal

42. whoami: Display the current username.

whoami

43. passwd: Change user password.

passwd

44. useradd/userdel: Add or remove a user account.

sudo useradd [username]
sudo userdel [username]

45. groupadd/groupdel: Add or remove a group.

sudo groupadd [groupname]
sudo groupdel [groupname]

46. chmod: Change file permissions.

chmod [permissions] [file]

47. clear: Clear the terminal screen.

clear

48. shutdown/reboot: Shutdown or restart the system.

sudo shutdown now
sudo reboot

49. curl: Transfer data from or to a server.

curl [URL]

50. lsof: List open files and the processes that opened them.

lsof

These commands cover a wide range of functionalities, from managing files and directories, to user management, network configuration, and system information retrieval. They are fundamental to navigating and managing a Linux system effectively

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Top 50 Linux Commands for Administrator?

Top 50 Linux Commands for Users?