Powershell Format String with -F

Using String.Format in Powershell is very easy. Simply do as follows:

" My Name is {0} and I am {1} years old" -f  "Reuben", "27"

This will output

My Name is Reuben and I am 27 years old.

We can also add operators to transform the string. Below is a table.

Operator	Example	Results	Description
{0}	Display a particular element	"{0} {1}" -f "a", "b"	a b
{0:x}	Display a number in Hexadecimal	"0x{0:x}" -f 181342	0x2c45e
{0:X}	Display a number in Hexadecimal uppercase	"0x{0:X}" -f 181342	0x2C45E
{0:dn}	Display a decimal number left justified, padded with zeros	"{0:d8}" -f 3	00000003
{0:p}	Display a number as a percentage	"{0:p}" -f .123	12.30 %
{0:c}	Display a number as currency	"{0:c}" -f  12.34	$12.34
{0,n}	Display with field width n, left aligned	"|{0,5}|" -f "hi"	|   hi|
{0,-n}	Display with field width n, right aligned	"|{0,-5}| -f "hi"	|hi   |
{0:hh} {0:mm}	Display the hours and minutes from a date time value	"{0:hh}:{0:mm}" -f (Get-Date)	01:34
{0:C}	Display using the currency symbol for the current culture	"|{0,10:C}|" -f 12.3	|    $12.40|

Reference:
http://msdn.microsoft.com/en-us/library/26etazsy(VS.71).aspx