/* STORAGE / FILESYSTEM / MOUNTS / PERMISSIONS
 *********************************************/

# Lists storage devices and mount points
    lsblk                       // aliased from 'lsblk -o NAME,SIZE,FSTYPE,LABEL,UUID,MOUNTPOINT'
    blkid                       // Useful to get partition UUID's

# List files
    ls                          // aliased from ' ls++'; uses plugin
    lsl                         // aliased from '\ls --color=auto   --group-directories-first -Ah'
    lsr                         // aliased from 'ls -ltr'; displays files by modification date

# Lists mount points and used/available space
    df                          // aliased from 'df -h -P --total --exclude-type=devtmpfs 2>/dev/null'
    df -hPT                     // -T shows filesystem type

# Disk usage and management
    ncdu

# Lists all directories
    tree                        // aliased from 'tree -dA'
    tree -L 2                   // as above but limits to 2 layers deep

# Change ownership and permissions
    chmod
    sudo chmod -R 700 <foldername>              // Require root to access folder
    chown
    chown -R <user>:<group> path/to/directory   // Change owner of entire directory recursively

# Display files and directories in current directory, from smallest to largest
    du                          // aliased from 'du -sm ./* | sort -n'

# Kills process locking a file
    fuser -k <filename>





/* SYSTEM MONITORING / STATISTICS
 ********************************/

# Sysstat performance monitoring utilities
    sar                         // collects all system statistics
    sar 1 3                     // prints stats every 1 second, does it 3 times
    iostat                      // CPU and IO stats
    mpstat                      // aliased from 'mpstat -P ALL'; CPU stats
    pidstat                     // Process ID stats
    pidstat -d <#>              // Reports disk IO in intervals of '#' seconds

# Displays system statistics in real time
    top
    htop

# Displays uptime and users
    w

# Displays tree of active processes
    pstree

# Displays running processes
    ps
    ps aux | grep <processname> // Displays all running processes containing <processname>
    ps -u <username>            // Show all processes by specific user
    cpuu                        // Process CPU Usage; from 'ps -eo pcpu,pid,user,args | sort -k 1 -r | head -10'




/* BENCHMARKING
 **************/

# Read 32GB's then toss it
    dd if=/dev/zero of=/dev/null bs=1M count=32768





/* NETWORKING / SECURITY
 ***********************/

# Display status of network interfaces
    ipa                         // all interfaces; aliased from 'ip address show scope global up'
    ip4                         // ipv4 interfaces aliased from 'ip -4 address show scope global up'
    ip6                         // ipv6 interfaces aliased from 'ip -6 address show scope global up'
    ipr                         // routing details aliased from 'ip -4 route show scope global'
    ip6r                        // ipv6 routing details aliased from 'ip -6 route show scope global'
    ifconfig                    // Also displays interface information
    ifconfig eth0 192.168.1.1   // Assigns an address to an interface
    ifconfig eth0:1 10.0.0.53   // Creates virtual interface linked to real interface
    ifconfig wlan1 up           // Enables an interface ('eth0 down' disables eth0 interface)
    ip route get 8.8.8.8        // Easy way to find active interface quickly

# Shows current active connections
    netconnections              // aliased from 'netstat -tuapw --numeric-hosts --numeric-ports'

# Gives current WAN IP address
    wanip                       // aliased from 'curl ipinfo.io/ip'

# Test if local/network firewall blocks telnet; no output if network firewall block in place
    tcpdump host <ip of source>

# Displays network statistics in real time
    iptraf-ng                   // Will require sudo/root

# Displays firewall rules
    iptables -L

# Network exploration tool and scanner
    nmap
    nmap -p80 192.168.1.0/24                    // Scans range 192.168.1.0 - 192.168.1.255 for port 80
    nmap -sT -sU -T5 192.168.1.0/24 -p 1-1024   // Stealth TCP/UDP scan for first 1024 ports
    nmap -sP <LAN IP>                           // Shows all active IP addresses on LAN

# Traceroute 2.0
    mtr

# Calculates network assignments
    ipcalc

# Shows program bandwidth use
    nethogs

# Shows bandwidth use on an interface
    iftop

# Lookup domains
    nslookup <www.address.com>
    nslookup <www.address.com> 8.8.8.8          // Does the domain lookup from google's public DNS

# List network activity
    lsof -i                                     // All activity
    lsof -i :80                                 // Only web processes using port 80
    lsof -P -i -n                               // Shows all applications using the internet

# SSH through intermediary if host is unreachable from local network
    ssh -t <reachablehost> ssh <unreachablehost>





/* SEARCHING / EDITING / REGULAR EXPRESSIONS
 *******************************************/

# Outputs a column, where 'x' indicates the column number
    awk '{ print $x }'

# Case insensitive recursive search through files from current directory for <string> and prints line number
    grep -iTrn <string> *

# Escape aliases to run regular command
    \<command>                  // Yeah it's that easy.





/* FUN
 *****/

# Cow tells you something in pretty colors
    moo                         // aliased from 'fortune | cowsay | lolcat'

# Does a matrix thing
    cmatrix

# Prints system info with image
    neofetch

# Makes a choo choo train
    sl

# Terminal Calculator, can do conversions, too
    calc                        // aliased from 'qalc' because q is awkward to type

# Accounting tool
    ledger

# hackernews / y-combinator in the terminal
    haxor-news
    hn top                      // Shows top stories, other options available
    hn view <#> -c              // Use this to view comments, replace '#' with the story number

# Display weather forecast
    wttr.in

# Prints your most commonly used commands
    history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head

# Hexadecimal dump of /dev/urandom
    hexdump -C /dev/urandom | grep 13\ 37   // grep highlights characters in the dump

# Prints an infinite loop installation screen that does nothing
    j=0;while true; do let j=$j+1; for i in $(seq 0 20 100); do echo $i;sleep 1; done | dialog --gauge "Install part $j
    : `sed $(perl -e "print int rand(99999)")"q;d" /usr/share/dict/words`" 6 40;done

# Opens firefox in a sandbox, whitelists custom homepage, and disowns it from the terminal
    firejail --whitelist=~/public/Homepage firefox & disown