![]() ![]() We can use wildcards in the path to specify the files that we want to update. To add the same content to multiple files we have a couple of parameters to help us. So to simply add content to a file we can use the following command: Add-Content -Path c:\temp\file.txt -Value "New line to add" Just like with the Out-File cmdlet and redirect operator, the Add-Content cmdlet creates a new file if the file doesn’t exist One of the biggest advantages of the Add-Content cmdlet is that it allows you to append content to multiple files at once. As you can see all the results are on the same line: Append to file with no newline Using PowerShell Add-ContentĪnother option to add content to a file is to use the Add-Content cmdlet. To make the result more readable I have added a semi-colon to all values. 'CranBerry ' | Out-File -FilePath C:\temp\fruits.txt -Append -NoNewline 'RaspBerry ' | Out-File -FilePath C:\temp\fruits.txt -Append -NoNewline ![]() 'BlackBerry ' | Out-File -FilePath C:\temp\fruits.txt -Append -NoNewline 'StrawBerry ' | Out-File -FilePath C:\temp\fruits.txt -Append -NoNewline 'BlueBerry ' | Out-File -FilePath C:\temp\fruits.txt -NoNewline # Note that you will need to specify NoNewLine for the first entry as well So it’s important to add the -NoNewLine parameter to the first Output as well. The newline character is placed after the value that you have added to the file. If you want to have the content on one single line, creating one long string, then you will need to use the Out-File cmdlet with the -NoNewLine parameter. When appending output to an existing file the content will be placed on a new line. 'Apple' | Out-File -FilePath C:\temp\fruits.txt -Append You can also append to a non-existing file, both methods will create a new file if the specified file doesn’t exist. In both cases, the contents of the output will be added to the existing file. For this, we can either use the -append parameter or use the redirect operator >. Instead of overwriting, we can also append the output to the existing content of the file. Get-Process -Name explorer | Out-File $exportPath -NoClobber $exportPath = "C:\temp\process-1.txt" # create something nice with a date or timestamp # Show a warning or change the file name here This way you can write a better solution, like appending a date to the file name, instead of simply trying to write to it: $exportPath = "C:\temp\process.txt" If you want to output to a file inside a script then I recommend that you use the Test-Path cmdlet first to determine if the file already exists. ![]() If the file already exists, then an error will be thrown: Don’t overwrite existing files Note that you can’t prevent overwriting with the redirect operator We can prevent this by adding the -NoClobber parameter to the cmdlet Get-Process -Name explorer | Out-File c:\temp\process.txt -NoClobber If you don’t specify any other parameter, then the Out-File cmdlet and redirect operator will overwrite any existing file by default. NPM(K) PM(M) WS(M) CPU(s) Id SI ProcessNameġ32 94,56 158,22 131,45 123364 1 explorerĪs you can see, the results of the Get-Process cmdlet is stored in the process.txt file: Powershell Output to File Get-Process -Name explorer > c:\temp\process.txt If the file doesn’t exist, then it will be created by the cmdlet: Get-Process -Name explorer | Out-File -FilePath c:\temp\process.txt To write the output to a file all you have to do is pipe the Out- File cmdlet behind your script or command and specify the path. I will explain more about the different streams later, but let’s first take a look at how we can simply write the output to a file in PowerShell. When using the redirect operator we can specify which stream we want to export: Operator When using the Out-File cmdlet, only the successful results are exported, so warnings or errors won’t be written to the file. But it has an advantage compared to Out-File. The redirect operator however doesn’t have any parameters. Out-File cmdlet Parameters PowerShell Redirect Operator Limit the number of characters on each line (default 80) With the Out-File cmdlet we can use the following parameters: ParameterĪppend the output to the existing content of the file ![]() The difference between the two is that the first accepts parameters and the latter doesn’t. The Out-File cmdlet and redirect operator > allows you to write and append ( >) the PowerShell output to a file. We are going to focus on the first two, but I will briefly mention the alternative if relevant. Other options are to use the Set-Content and Add-Content cmdlet. The most common ways are to use the Out-File cmdlet or the redirection operator >. There are a couple of ways to write the output of PowerShell to a file. I will also explain how you can append to an existing file or how you can create a log file. In this article, we are going to take a look at how to write the output to a file in PowerShell.
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