String - PowerShell

Ref: Everything you wanted to know about variable substitution in strings

Format string

<format> -f <value>[, ...]

$a = "Life"
$b = "great"

"{0} is {1}" -f $a, $b
"$a is $b"
"${a} is ${b}"

# Life is great

Filter string

<command> | Select-String "<pattern>"

Concatenate string

$a + ' ' + $b
"$a $b"

Command execution

"Date: $(Get-Date)"