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Quick Start Guide

Get up and running quickly with Calculinux basics.

Essential Commands

System Information

# System version
cat /etc/os-release

# Kernel version
uname -a

# Hardware info
cat /proc/cpuinfo
cat /proc/meminfo

# Disk usage
df -h

# Memory usage
free -h

Package Management

# Update package list
opkg update

# Search for package
opkg find <name>

# Install package
opkg install <package>

# Remove package
opkg remove <package>

# List installed
opkg list-installed

File Management

# Navigate directories
cd /path/to/directory
pwd  # Show current directory
ls -la  # List files

# Create/remove
mkdir dirname
rm filename
rm -r dirname

# Copy/move
cp source dest
mv source dest

# View files
cat filename
less filename
nano filename  # Edit

System Management

# Reboot
reboot

# Shutdown
poweroff

# Check services
systemctl status
systemctl start <service>
systemctl stop <service>

# View logs
journalctl -f  # Follow logs
dmesg  # Kernel messages

Common Tasks

Connect to Network

# Ethernet (DHCP)
udhcpc -i eth0

# Check connection
ping 8.8.8.8

Install Software

# Example: Install Python
opkg update
opkg install python3

# Example: Install text editor
opkg install vim

Manage Files

# Create a file
echo "Hello World" > test.txt

# Edit a file
nano test.txt

# View a file
cat test.txt

Monitor System

# Real-time process monitor
htop  # or top

# Disk usage by directory
du -h /home | sort -h

# Running processes
ps aux

Development

Python Example

# Create Python script
nano hello.py

#!/usr/bin/env python3
print("Hello from Calculinux!")

# Make executable
chmod +x hello.py

# Run
./hello.py

C Example

# Create C program
nano hello.c

#include <stdio.h>

int main() {
    printf("Hello from Calculinux!\n");
    return 0;
}

# Compile
gcc hello.c -o hello

# Run
./hello

Tips & Tricks

Keyboard Shortcuts

  • Ctrl+C: Stop current command
  • Ctrl+Z: Suspend current command
  • Ctrl+D: Exit/logout
  • Tab: Auto-complete

Command History

# View history
history

# Search history
Ctrl+R  # Then type search term

# Rerun last command
!!

# Rerun command from history
!123  # Run command #123

Useful Aliases

Add to ~/.bashrc:

alias ll='ls -la'
alias update='opkg update'
alias install='opkg install'

Learning More

Built-in Help

# Command manual
man <command>

# Command help
<command> --help

# Installed documentation
ls /usr/share/doc

Further Reading

Getting Help

Next Steps

Now that you know the basics: