🛠️ General Linux Troubleshooting Tips

Linux is powerful, but sometimes things go wrong. Here are some quick tips to diagnose and fix common issues.

🔍 System Information & Monitoring

• uname -a → Check system details

• uptime → See system load & uptime

• df -h → Check disk space

• free -h → Monitor memory usage

• top or htop → View running processes

🌐 Network & Internet Issues

• ping -c 4 google.com → Test internet

• ip a → Show network interfaces

• netstat -tulnp → Check open ports

🔑 User & Permissions Issues

• sudo → Run as superuser

• chmod 755 file → Change file permissions

• chown user:group file → Change file ownership

• ⚡ Fixing Package Issues

Debian/Ubuntu:

sudo apt --fix-broken install  
sudo dpkg --configure -a  

RHEL/CentOS:

sudo dnf clean all
sudo dnf update  

🔄 System & Boot Issues

• sudo update-grub → Fix bootloader

• journalctl -xe → View system logs

• dmesg → Check kernel messages

🛑 Force Restart or Shutdown

• reboot → Restart system

• shutdown -h now → Shutdown immediately

💡 This is just a basic guide.

contents:

✅ "How to encrypt a folder in Linux"

✅ "How to decrypt a folder in Linux"