Overview: A guide to essential Linux commands for cybersecurity tasks.
Linux is the preferred operating system in cybersecurity due to its flexibility and open-source nature.
1.File and Directory Management:
Lists directory contents.
`ls`:Changes directory.
cd <directory>Prints current directory.
pwdCreate a new directory.
mkdir <directory>Remove an empty directory.
rmdir <directory>Remove a file.
rm <file>Copy a file or directory.
cp <source> <destination>Move or rename a file or directory.
mv <source> <destination>Display the contents of a file.
cat <file>2. System Information:
Display system information.
uname -aDisplay running processes.
topShow disk space usage.
df -hShow memory usage.
free -hDisplay the current logged-in user.
whoami3. Networking:
Display network interfaces
ifconfigShow all network interfaces.
ip aSend ICMP echo requests to a host.
ping <host>Trace the route packets take to a network host.
traceroute <host>Show listening ports and network connections.
netstat -tuln4. Package Management:
Update package lists.
apt updateUpgrade installed packages.
apt upgradeInstall a new package.
apt install <package>Remove a package.
apt remove <package>5. Permissions:
Change file permissions.
chmod <permissions> <file>Change file ownership.
chown <user>:<group> <file>6. Text Processing:
Search for a pattern in a file.
grep <pattern> <file>Display text to the terminal.
echo <text>Open a file in the Nano text editor.
nano <file>