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Source: w3s

Java Arrays.deepToString()

Object[][] array = {{"a" , "b"}, new Object[][]{{1, 2}, {3, 4}}};
Arrays.deepToString(array);
// [[a, b], [[1, 2], [3, 4]]]

Zero padding and integer in bash

$ i=99
$ printf "%05d\n" $i
00099

$ printf -v abc "%05d\n" $i
$ echo $abc 
00099

Execute a Windows cmd command from Cygwin

cygwin $ cmd /c start http://www.google.com

Open URL from windows command line

C:> start http://www.google.com

PowerShell check tcp connection

C:> Test-NetConnection -ComputerName hostname -Port 1234

Check memory slots

Occupied slots (example with 2 slots)

C:> wmic MEMORYCHIP get banklabel, capacity, caption, devicelocator, partnumber
BankLabel  Capacity    Caption           DeviceLocator  PartNumber
BANK 2     4294967296  Mémoire physique  DIMM3          M378B5173EB0-YK0
BANK 0     4294967296  Mémoire physique  DIMM1          M378B5173EB0-YK0

Total slots available (example with 2 total slots)

C:> wmic memphysical get MaxCapacity, MemoryDevices
MaxCapacity  MemoryDevices
16777216     2