| apt-cache show | APT package info |
| arch | show architecture |
| bind -p | Bash keyboards shortcut info |
| cat /boot/cmdline.txt | Boot Parameters |
| cat /etc/os-release | show release OS information |
| cat /etc/passwd | Username & Password Info |
| cat /proc/cpuinfo | CPU Info |
| cat /proc/devices | Device drivers |
| cat /proc/device-tree/model && echo “” | Raspberry Pi Hardware Model |
| cat /proc/fb | Framebuffer devices. |
| cat /proc/filesystems | File System Info |
| cat /proc/iomem | Current system memory map for devices. |
| cat /proc/loadavg | System load average |
| cat /proc/meminfo | Memory Info |
| cat /proc/misc | Miscellaneous drivers registered for miscellaneous major device. |
| cat /proc/modules | Currently loaded kernel modules. |
| cat /proc/mounts | List of all mounts in use by system. |
| cat /proc/partitions | Detailed info about partitions available to the system. |
| cat /proc/stat | Record or various statistics kept from last reboot. |
| cat /proc/uptime | Uptime information (in seconds). |
| cat /proc/version | Linux Version Info |
| date | Date Info |
| df / | Current Disk Info |
| df -h | Disk Space Info |
| dig http://www.google.co.uk | Query DNS Servers |
| dmesg | Kernel Messages Info |
| dpkg –get-selections | Installed packages info |
| echo “$(expr $(</sys/class/thermal/thermal_zone0/temp) / 1000)’C” | GPU temp info |
| env | Enviroment variables info |
| file | File info |
| find | Find a file |
| free -h | Memory Stats Info |
| getconf LONG_BIT | show kernel bit type |
| grep | Search for string |
| head | First ten lines of file info |
| history | Recent Shell Command Info |
| hostname -I | Hostname Info |
| hostnamectl | Show systemd based OS info |
| id | User and group identity info |
| ifconfig | Network Info |
| ip address | IP Adress info |
| iptables -L | Firewall info |
| iwconfig | Wireless Info |
| iwlist wlan0 scan | Wireless Network Info |
| iwlist wlan0 scan | grep ESSID | Wireless SSID Info |
| jobs | Background processes info |
| last | Last login information |
| lastlog | User Login Info |
| ls -l | Directory Files Info |
| lsb_release -a | Show lsb OS info |
| lsblk | Block Devices Info |
| lscpu | CPU Info |
| lsmod | Kernel modules info |
| lsof | Open files info |
| lsusb | USB Devices info |
| man | Manual info |
| netstat -lp | Network Stat Info |
| nslookup google.com | Query the DNS of Servers |
| ps | Processes Info |
| pwd | Directory Info |
| tail | Last ten lines of file info |
| top -bn1 | Running Process Info |
| uname -a | Architecture, Hostname, Kernel Version , Kernel Release Info |
| uptime | Uptime information (in seconds). |
| vcgencmd get_mem arm && vcgencmd get_mem gpu | Memory Size Info |
| vcgencmd measure_clock arm | CPU speed info |
| vcgencmd measure_temp | Temperature Info |
| vcgencmd measure_volts core | Core Voltage info |
| w | Username and terminal info |
Raspbian Pi Admin Guides 