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What Does '>>' Do In Powershell?

2 minutes read

In PowerShell, the '>>' operator is used for output redirection. It appends the output of a command or expression to a specified file or stream. This can be particularly useful when you want to save the output of a command to a file without overwriting the existing content.


What is the syntax for using '>>' in Powershell?

In PowerShell, the '>>' symbol is used to append the output of a command or script to a file.


The syntax for using '>>' in PowerShell is as follows:

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command or script >> outputfile.txt


For example, if you want to append the output of the 'Get-Process' command to a file called 'processes.txt', you would use the following command:

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Get-Process >> processes.txt


This will append the output of the 'Get-Process' command to the end of the 'processes.txt' file.


How to redirect errors using '>>' in Powershell?

In Powershell, you can redirect errors by using the 2>> operator to append errors to a file or 2> operator to overwrite errors to a file. Here's how you can redirect errors using >>:

  1. To redirect errors to a file and append errors to it, you can use the following command:
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Your-Command-Here 2>> output.txt


  1. To redirect errors to a file and overwrite errors to it, you can use the following command:
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Your-Command-Here 2> output.txt


Replace Your-Command-Here with the actual command you want to run and output.txt with the file name where you want to redirect the errors.


For example, if you want to redirect errors from a command Get-ChildItem to a file errors.txt, you can use the following command:

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Get-ChildItem C:\NonExistentDirectory 2>> errors.txt


This will redirect any errors that occur when running the Get-ChildItem command to the file errors.txt.


What is the maximum file size supported by '>>' in Powershell?

There is no specific maximum file size supported by the '>>' operator in Powershell. The size of the file that can be appended to using '>>' depends on the operating system's file system limits and available disk space. Powershell itself does not impose any specific limitations on the file size that can be created or modified using this operator.


What does '>>' do with special characters in Powershell?

In Powershell, the '>>' operator is used to append output to a file. When used with special characters such as '>' or '>>', Powershell treats the special character as it is and does not apply any special meaning to it. The output containing the special character is still appended to the file.

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