![]() ![]() In many programming languages including C# (.Net) and most UNIX shells the escape character is \ (an easier method would be using $drive = $ env:SystemDrive which will return a system.string in the first place.) Backslash \ # Alternatively use the $( ) SubExpression operator: value property and concatenate that with + to get the desired result: # Concatenating it with a string is closer, but still wrong: ![]() # Adding this to a string will give the wrong resultĪaa bbb This returns a DictionaryEntry object with. In many cases, when combining simple strings, the + operator is not needed:īut when combining more complex objects, the + operator becomes very useful:įor example if we retrieve an environment variable In the above %ProgramFiles% is replaced with the value $env:ProgramFiles Concatenating Strings The arguments after -% have any environment variables (strings surrounded by %) automatically expanded. If the command type is Application, the parameter -% is not passed to the command. $params = "C:\Program Files (x86)\Demo\text.txt" PS C:\> FIND.EXE -% "Search Text" "C:\Program Files (x86)\Demo\text.txt"Īny PowerShell variables after the -% won’t be expanded but you can work around this by building up the command string using more than one variable: PS C:\> FIND.EXE '"Search Text"' "C:\Program Files `(x86`)\Demo\text.txt" This can be used to call a non-PowerShell utility and pass along some quoted parameters exactly as is.įor example instead of escaping every character that PowerShell may interpret: ![]() In PowerShell 3.0 the special Stop Parsing symbol -% is a signal to PowerShell to stop interpreting any remaining characters on the line. $query = "SELECT * FROM Customers WHERE Name LIKE '%JONES%'" Verbatim arguments -% The outermost quotes always determine the behaviour. Similarly if you nest a Double-Quoted String inside a larger Single-Quoted string, the single-quoted rules apply. If you nest a Single-Quoted String inside a larger Double-Quoted string, the double-quoted rules apply. Any embedded double quotes can be escaped `" or doubled (replace " with "") You can prevent this substitution by prefixing the $ with an escape character. Replaced with the variable's value when theĬommand is processed. When you enclose a string in double quotation marks, any variable names in the string such as "$myVar" will be While single quotes do not evaluate expressions or variables, they do evaluate wildcards, so the following two expressions both evaluate to True: $msg = 'Every "lecture" should cost $5000' If the string contains any embedded single quotes, they must be doubled (replace ' with '') Expressions in single-quoted strings are not evaluated, not even escape characters or any of the Special characters listed above. When you enclose a string in single quotation marks, any variable names in the string such as '$myVar' will appear exacly as typed when the command is processed. `u Quotation MarksĮither single or double quotes may be used to specify a literal string. Special characters are used to format/position string output. For example $myVariable will normally be expanded to display the variables contents but `$myVariable will just be passed as $myVariableģ) When used inside double quotation marks, the escape character indicates that the following character should be interpreted as a 'special' character. The escape character can be used in three ways:ġ) When used at the end of a line, it is a continuation character - so the command will continue on the next line.Ģ) To indicate that the next character following should be passed without substitution. The PowerShell escape character is the grave-accent( `) How-to: Escape characters, Delimiters and Quotes
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