Automating VLAN Creation on Cisco Devices with Ansible
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Linux is a powerful operating system used by developers, system administrators, and tech enthusiasts worldwide. Whether you're new to Linux or brushing up on your skills, here are 30 essential commands every Linux user should know:
Lists files and directories in the current directory.
ls
Changes the current directory.
cd /path/to/directory
Prints the current working directory.
pwd
Creates an empty file.
touch filename
Creates a new directory.
mkdir new_directory
Removes files or directories.
rm filename
Use rm -r
for directories.
Copies files or directories.
cp source destination
Moves or renames files and directories.
mv oldname newname
Displays the contents of a file.
cat filename
Opens a simple text editor.
nano filename
A powerful text editor.
vim filename
Changes file permissions.
chmod 755 filename
Changes file ownership.
chown user:group filename
Searches for files and directories.
find /path -name filename
Searches for patterns in files.
grep "pattern" filename
Displays disk space usage.
df -h
Shows disk usage of files and directories.
du -sh
Displays real-time processes and resource usage.
top
Lists running processes.
ps aux
Terminates processes by their PID.
kill PID
Archives files and directories.
tar -cvf archive.tar files
Extract:
tar -xvf archive.tar
Compresses and extracts files.
zip archive.zip files
unzip archive.zip
Downloads files from the internet.
wget http://example.com/file
Transfers data from or to a server.
curl http://example.com
Connects to a remote server via SSH.
ssh user@hostname
Copies files over SSH.
scp file user@remote:/path
Displays the command history.
history
Creates shortcuts for commands.
alias ll='ls -la'
Executes commands with superuser privileges.
sudo command
Restarts the system.
sudo reboot
Mastering these commands can significantly boost your productivity and efficiency in Linux. Practice them regularly to get comfortable with their usage.
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