User talk:Ksaareme

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Useful linux commands

Checking information

• lsb_release -a to check OS
• uname -sr to check OS kernel
• cat /proc/cpuinfo and check processor information.
• arch to check CPU architecture
• cat /proc/meminfo to check memory usage, RAM
• lspci -t -v -nn to enumerate PCI and PCI Express devices
• lsusb and lsusb -t to enumerate USB devices
• fdisk -l to enumerate disks and partitions
• lsblk to enumerate block devices
• xrandr to enumerate display outputs
• cat /proc/asound/cards to check which audio devices are available
• dmidecode to see even more information about your computer
• ifconfig -a or ip addr list to list all network interfaces
• iwconfig or iw list to list all wireless network interfaces
• hcitool dev to list bluetooth host controller.
• glxinfo to check 3D rendering capabilities, GPU
• lscpu info about cpu and processing units
• lshw - short info about hardware units, such as cpu, memory, disk, usb controllers, network adapters
• hwinfo –short info about hardware utility stuff
• lspci info about pci buses and devices connected to them
• lsscsi info about sata/scsi devices
• lsusb info about usb controllers and devices
• lsblk block information, harddrive partitions
• df –H info about disk space and partitions that are mounted
• fdisk –l info about partitions
• free –m info about used, free and total amount of RAM
• hdparm –i info about sata devices

Editing files

• cp - copy files and directories
• mv - move or rename files and directories
• rm - remove files and directories
• mkdir - create directories

NMAP and SSH

NMAP

• Find my ip: ifconfig
• Scan networks: nmap <ip>
• Find live hosts: nmap -sP 192.168.0.*
• Scan specific port: nmap -p 80 server2.tecmint.com
• Scan a single ip address: nmap 192.168.1.1
• Scan a host name: nmap server1.cyberciti.biz
• Scan a host name with more info : nmap -v server1.cyberciti.biz
• Scan with disabled port scan: nmap -sn 192.168.2.1/24
• Read and scan from txt file: nmap -iL /tmp/test.txt
• Create the txt file to read from: cat > /tmp/test.txt

SSH

• Connect: ssh collie.stanford.edu
• Log-in: ssh jhawkins@collie.stanford.edu