In the case of Set-Content, it is actually delayed even further, namely until the first input object is received, but that is an implementation detail that shouldn't be relied on. The -Encoding parameter can be used to control the encoding explicitly. First let's take the case of files that may only have commas in them. It's not too difficult to cope with these cases. In PowerShell (Core) 7+, BOM-less UTF-8 is the consistent default. Double quotes and commas are special characters in CSV files, so if you try the above command on a directory containing files named using such characters, you won't get a valid CSV file. In Windows PowerShell, Out-File / > creates "Unicode" (UTF-16LE) files, whereas Set-Content uses the system's legacy ANSI code page. ), which conveniently resulted in an array of the individual files' property values being returned, thanks to a feature called member-access enumeration. BaseName was applied to all files returned by (Get-ChildItem. Out-File cmdlet - would also result in the undesired inclusion of the output, files.txt, in the enumeration, as in cmd.exe and POSIX-like shells such as bash, because the target file is created first.īy contrast, use of a pipeline with Out-File (or Set-Content, for text input) delays file creation until the cmdlet in this separate pipeline segment is initialized - and because the file enumeration in the first segment has by definition already completed by that point, due to the Get-ChildItem call being enclosed in (.), the output file is not included in the enumeration.Īlso note that property access. Note that use of PowerShell's > redirection operator - which is effectively an alias of the To see all aliases defined for Get-ChildItem, run However, to avoid confusion with cmd.exe's internal dir command, which has fundamentally different syntax, it's better to use the PowerShell-native alias, gci. Note: You can use dir in PowerShell too, where it is simply an alias of Get-ChildItem. (Get-ChildItem -File).BaseName | Out-File files.txt BaseName extracts the file names without extension. In PowerShell: # Get-ChildItem (gci) is PowerShell's dir equivalent.
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