When you're just defining a string with no variables inside, always use single quotes. Single quotes don't try to expand any variables inside and treat the string literally. This is atinybit faster to process, eliminates the possibility of unwanted variable expansion, and is just more intentio...
Variable substitution PowerShell has another option that is easier. You can specify your variables directly in the strings. PowerShell $message="Hello,$first$last." The type of quotes you use around the string makes a difference. A double quoted string allows the substitution but a singl...
$string = "Hello `'World`'" $string OUTPUT 1 2 3 Hello 'World' Using String Concatenation Operator Use string concatenation operator (+) to add double quotes to string in PowerShell. Use + Operator 1 2 3 4 $string = "Hello " + """World""" $string OUTPUT 1 2 3 Hello ...
The keys and values in a hashtable can also be Hashtable objects. The following statement adds key-value pair to the hashtable in the $p variable in which the key is a string, Hash2, and the value is a hashtable with three key-value pairs. PowerShell Copy $p = $p + @{ "Hash...
Set-Variable AB A,B argument 'A','B' (array) CMD /CECHO A,B argument 'A,B' (string) CMD /CECHO $AB expression 'A B' (array) CMD /CECHO :$AB argument ':A B' (string) Handling special characters The backtick character (`) can be used to escape any special character in an...
A string enclosed in double quotation marks is an expandable string. Variable names preceded by a dollar sign ($) are replaced with the variable's value before the string is passed to the command for processing.For example:PowerShell Copy ...
Double quotes gives you adynamicelement to string values. You will encounter this type of string quotation when the string contains dynamic data from variables stored in memory or dynamically generated. Consider the following example: # Same as previous example. Create a variable with a simple valu...
When defining a regex containing an anchor ($), you should enclose the regex in single quotes ('). If you use double quotes ("), PowerShell interprets the string as an expandable variable expression. When using anchors in PowerShell, you should understand the difference betweenSinglelineandMu...
In this example, the literal string is name='BITS.' The double quotes contain the whole thing. Both $filter1 and $filter2 end up containing exactly the same thing, but $filter2 gets there by using the variable-replacement trick of double quotes. Note that only the outermost set of ...
In this example, the environment variableFOOis added to the session withfooas the value. The example runsStart-Processthree times, returning the value ofFOOeach time. The first command doesn't override the environment variable. In the second command,FOOis set tobar. In the third command,FOO...