Powertip Of The Day-Replace text in files

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Original article:

Often, some text will need to be replaced in a text file. That's easy with get-content and set-content-or not?

Get-content c: \ somefile.txt | foreach-object {$ _-replace 'old', 'new'} | set-content c: \ somefile.txt

If you try this, powershell will complain that the file is in use and can't be written. powershell cannot read and write to a file at the same time. your solution: Use parenthesis so that powershell reads the file first and only and then processes the content:

(Get-content c: \ somefile.txt) | foreach-object {$ _-replace 'old', 'new'} | set-content c: \ somefile.txt

 

 

Translation:

Often, you need to replace some text in a text file.Get-contentAndSet-contentIt is very simple:

Get-content c: \ somefile.txt | foreach-object {$ _-replace 'old', 'new'} | set-content c: \ somefile.txt

If you try the aboveCode,PowershellIt will prompt that the file is in use and cannot be written.PowershellYou cannot read or write a file at the same time. The feasible solution is to use parentheses.PowershellThe file will be read and then processed:

(Get-content c: \ somefile.txt) | foreach-object {$ _-replace 'old', 'new'} | set-content c: \ somefile.txt

 

Notes:

After parenthesesPowershellThe task in parentheses is completed first, which is equivalent to a higher priority.

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