Expand Linux command library
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@@ -1,27 +1,136 @@
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# ===== Proxmox =====
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pveversion -v
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qm list
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pct list
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pvesm status
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# SYSTEM
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# ===== Docker =====
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docker ps
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docker compose ps
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docker compose logs -f
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docker stats
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hostname # Show hostname
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hostnamectl # Show system hostname and OS information
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uptime # Show system uptime and load
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uname -a # Show kernel information
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cat /etc/os-release # Show Linux distribution information
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whoami # Show current username
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id # Show current user and group IDs
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date # Show current date and time
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timedatectl # Show system time and timezone
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free -h # Show memory usage
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nproc # Show number of CPU cores
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lscpu # Show CPU information
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# ===== Disk =====
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lsblk -f
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df -h
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du -sh *
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sudo smartctl -a /dev/sda
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# STORAGE
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# ===== Network =====
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ip addr
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ip route
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ss -tulpn
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df -h # Show filesystem disk usage
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df -hT # Show filesystem usage and filesystem types
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du -sh * # Show sizes of items in current directory
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lsblk # List block devices
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lsblk -f # List block devices with filesystem information
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blkid # Show block device UUIDs and filesystem types
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findmnt # Show mounted filesystems
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mount # Show mounted filesystems
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sudo fdisk -l # List disk partitions
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# ===== Files =====
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ls -lah
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find . -maxdepth 2 -type f
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rsync -avh --progress SOURCE/ DEST/
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# NETWORK
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ip addr # Show network interfaces and IP addresses
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ip -br addr # Show concise network interface information
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ip route # Show routing table
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ip -br link # Show concise link status
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ss -tulpn # Show listening TCP and UDP ports
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ss -tunap # Show active network connections
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ping -c 4 8.8.8.8 # Test network connectivity
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curl -I https://example.com # Show HTTP response headers
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dig example.com # Query DNS
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resolvectl status # Show DNS resolver status
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hostname -I # Show local IP addresses
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# SYSTEMD
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systemctl --failed # Show failed systemd units
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systemctl list-units --type=service --state=running # Show running services
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systemctl list-units --type=service --state=failed # Show failed services
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systemctl status docker # Show Docker service status
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journalctl -xe # Show recent system journal errors
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journalctl -b # Show logs from current boot
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journalctl -p err -b # Show errors from current boot
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journalctl --disk-usage # Show journal disk usage
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# PROCESSES
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ps aux # Show all running processes
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ps aux --sort=-%cpu | head # Show top CPU-consuming processes
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ps aux --sort=-%mem | head # Show top memory-consuming processes
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top # Interactive process monitor
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htop # Interactive process monitor
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pgrep -a process-name # Find processes by name
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lsof -i # Show network connections by process
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# PACKAGES
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apt list --upgradable # Show available package updates
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apt policy package-name # Show package version information
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dpkg -l # List installed packages
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dpkg -l | grep package-name # Search installed packages
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apt-cache search package-name # Search available packages
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# FILES
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ls -lah # List files with details
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pwd # Show current directory
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find . -maxdepth 1 -type f # Find files in current directory
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find . -type f -name "*.log" # Find log files recursively
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du -sh ./* # Show sizes of items in current directory
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stat filename # Show file metadata
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file filename # Identify file type
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namei -l /path/to/file # Show path permissions
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# USERS
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who # Show logged-in users
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w # Show logged-in users and activity
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last # Show recent logins
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getent passwd # List local and directory users
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getent group # List groups
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groups # Show current user's groups
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sudo -l # Show current user's sudo privileges
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# DOCKER
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docker ps # List running containers
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docker ps -a # List all containers
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docker images # List Docker images
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docker volume ls # List Docker volumes
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docker network ls # List Docker networks
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docker stats # Show container resource usage
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docker system df # Show Docker disk usage
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docker compose ps # Show Compose container status
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docker compose images # Show Compose images
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docker compose logs -f # Follow Compose logs
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# GIT
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git status # Show repository status
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git log --oneline -10 # Show last 10 commits
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git log --oneline --decorate -10 # Show recent commits with branch information
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git branch # Show local branches
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git branch -a # Show all branches
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git remote -v # Show Git remote URLs
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git diff # Show uncommitted changes
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# HARDWARE
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lspci # List PCI devices
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lsusb # List USB devices
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lsmem # Show memory information
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lsblk -o NAME,SIZE,TYPE,FSTYPE,MOUNTPOINTS # Show detailed storage layout
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sudo dmidecode -t system # Show system hardware information
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# SSH
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sshd -T # Show effective SSH server configuration
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ssh -v localhost # Test SSH connection with verbose output
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lastlog # Show last login for users
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# DISK / FILESYSTEM DIAGNOSTICS
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sudo dmesg -T | tail -50 # Show recent kernel messages
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sudo dmesg -T | grep -i error # Search kernel messages for errors
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sudo journalctl -k -b # Show kernel logs from current boot
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sudo smartctl --scan # Detect available SMART devices
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sudo smartctl -H /dev/sdX # Show SMART health status
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sudo smartctl -a /dev/sdX # Show complete SMART information
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