Powershell regex replace in file

The regular expression engine, while powerful, has a custom, often undocumented syntax for advanced operations such as multi-line search and replace. Since XML elements can contain multiple lines between their opening and closing tags, a more flexible engine is required when parsing and altering these documents.

In order to replace multi-line strings using Powershell, the first step is to load the text of the target file into memory. This can be accomplished in one line of code by taking advantage of either. Net framework functions, or by using the RAW file read format. Since the. Net framework method provides more flexibility, we will use that in this example:.

The first line, though not required, can provide better path referencing by setting the. Net current directory. Without this command, the. Net framework may use a different local folder, such as the system root, and wreak havoc with relative paths.

With the file loaded into memory, the regular expression commands can begin. Is there an automatic powershell variable. Yes, you can do that in one line and don't even need a pipeline, as -replace works on arrays like you would expect it to do and you can chain the operator :. The parentheses around the Get-Content call are necessary to prevent the -replace operator being interpreted as an argument to Get-Content.

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Asked 8 years, 8 months ago. Active 8 years, 8 months ago. Viewed 58k times. Get-Content -path "Input. Is there an automatic powershell variable Is it possible to do more replacements than one in a pipeline. Improve this question. Martin Ender Jan Baer Jan Baer 1, 1 1 gold badge 12 12 silver badges 15 15 bronze badges.

Add a comment. Active Oldest Votes. Yes, you can do that in one line and don't even need a pipeline, as -replace works on arrays like you would expect it to do and you can chain the operator : Get-Content Input.

Maybe those researchers should recheck their calculations. Peter should know; after all, he pretty much has lived forever. Comments are closed. Scripting Forums. PowerShell Forums. PowerShell on TechCommunity. January 17th, Read next Hey, Scripting Guy! Before we begin today, we have a question for you, and ScriptingGuy1 January 18, The problem is that the spreadsheet has multiple worksheets.

I can import the first ScriptingGuy1 January 21, NET Core. Recordset ADOR. Paste your code snippet. Cancel Ok.