"Explore PowerShell" "XV" quotes and escape characters

In PowerShell, single quotes and double quotes have different functions and roles. The usage rules of quotation marks are often related to the substitution of variables and special characters.

Basic usage

In conclusion:

Single quotes in any case represent only the characters within the quotation marks. In other words, the contents of single quotes do not make the substitution of variables and the escape of characters. In double quotes, variable substitution and character escaping are allowed. In the judgment that the variable is substituted and the character is escaped, it is determined by the outermost quotation mark of the command.

For more information, or to use an example to illustrate.

Use double quotes for output:

$a="World"　<enter>
"Hello,　$a"　<enter>

The results of the operation are:

If you use single quotes, change the command to:

$a="World"　<enter>
'Hello,　$a'　<enter>

The output result is:

This is very simple, as mentioned in the previous article in this tutorial.