In this article we are going to explore Top 20 Linux commands for Hackers 2023.

1: The OS type

uname -o

The first command, uname -o, displays the type of operating system installed on your machine.

2: CPU archit­ecture

uname -m

The second command, uname -m, provides information about the CPU architecture on your system.

3: The kernel version

uname -r

The third command, uname -r, tells us the kernel version running on our system.

4: The OS name, release, version

cat /etc/os-release

The fourth command is cat /etc/os-release. This command provides us with the name, release, and version of the operating system.

5: The system hardware

lshw

The fifth command is lshw. This command gives us complete information about the system hardware.

6: The CPU details

lscpu

The sixth command is lscpu. This command provides detailed information about the CPU.

7: Check system memory

free -h or free -m

The seventh command is free -h or free -m. This command allows us to check the system memory.

8: Check the virtual memory stats

vmstat -S m

The eighth command is vmstat -S m. This command helps us check the statistics of virtual memory.

9: display information about currently running processes

ps all

The ninth command is ps all. This command provides information about all currently running processes on the system.

10: search packages for instal­lation

apt search
For Example: apt search python­-boto

For example: apt search python-boto

The tenth command demonstrates apt search. This command allows us to search for packages available for installation.

11: To installed package

sudo apt-get install
Example: sudo apt-get install mariadb-client

The eleventh command is about installing packages in Linux. With the apt-get install <package name> command, you can install packages. Sometimes, sudo apt-get install command is used to install packages requiring administrative privileges.

12: Find current Directory

pwd

The twelfth command helps us find the current directory. By running the pwd command, we can determine which directory we are currently in.

13: Uninstall package

sudo apt-get remove
Example: sudo apt-get remove sqlmap

The thirteenth command is sudo apt-get remove. With this command, you can uninstall or delete any package from your Linux operating system.

14: List the mounted disk drives

df -kh

The fourteenth command is used to list the mounted disk drives in Linux. By running df -kh, you can easily check the mounted disk drives on your system.

15: To mount the volume

First, you need to create a directory. After creating the directory, you can mount it using the following commands:

mkdir -p
sudo mount

By executing these commands, you can mount a directory that you have created.

16: List biggest files from directory (biggest 5)

sudo du -a /etc/ | sort -n -r | head -n 5

The sixteenth command helps you find the largest files in a specific directory. In this example, sudo du -a /etc/ | sort -n -r | head -n 5 retrieves the largest 5 files from the /etc/ folder.

17: Find the file

find /home/ -name "*.txt"

The seventeenth command allows you to find files. For example, if you want to find all files with the .txt extension in a specific directory, you can use the find /home/ -name "*.txt" command.

18: Search the text string in a directory and print filename containing that string

grep -ril "hello" /home/masaud

In the eighteenth command, we use the grep command. With grep, you can search for a specific string value or pattern in files. The command grep -ril "hello" /home/masaud searches for the string “hello” in the /home/masaud directory and prints the filenames containing that string.

19: File the text string from a given directory

grep -rIn (search text)

The nineteenth command, grep -rIn novaexperience.net, allows you to search for a specific text string in files within a given directory. In this example, it fetches data containing the text “novaexperience.net” from files in the desktop directory.

20: Linux commands to display a colorful and dynamic system information dashboard

watch -n 1 "echo -e '\033[0;36mSystem Information:\033[0m'; lscpu | awk '/Model name/ {print \"\033[0;33mCPU:\033[0m\", \$3, \$4, \$5, \$6}'; free -h | awk '/Mem:/ {print \"\033[0;33mMemory Usage:\033[0m\", \$3, \"/\", \$2}'; df -h / | awk '/\// {print \"\033[0;33mDisk Usage:\033[0m\", \$3, \"/\", \$2}'; echo -e \"\033[0;33mUptime:\033[0m\" $(uptime -p)"

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