![]() ![]() Send PowerShell's success output stream (number 1) to stdout. C:\>powershell -noprofile -command "'hi' Write-Error error!" 2>err.txt.However - curiously - if you redirect stderr, PowerShell does send its error stream to stderr, so that with 2> you can capture the error-stream output selectively the following outputs just 'hi' - the success-stream output - while capturing the error-stream output in file err.txt: C:\>powershell -noprofile -command "Write-Error error!" >NUL.In practice, this means that whatever PowerShell stream you send output to will be seen as stdout output by an external caller:Į.g., if you run the following from cmd.exe, you'll see no output, because the stdout redirection to NUL applies equally to all PowerShell streams: See GitHub issue #7989 for a discussion of this problematic behavior, which likely won't get fixed, so as to preserve backward compatibility. In effect, but very unfortunately, both Windows PowerShell and PowerShell Core as of v7.2, send all of their 6(!) output streams to stdout when called from the outside, via PowerShell's CLI. What would be the right thing to use to write to the Windows equivalent of stdout? Then send the "someredirectedoutput.txt" back to the developers. ![]() This way, when you submit a script to the system administrator, he can easily runthescript.ps1 >someredirectedoutput.txt and see on the screen, if everything is OK. We have now agreed that the only information if the script executed successfully or died has to be Write-Host'ed, and everything that is the script's author might need to know about the execution (what items were updated, what fields were set, et cetera) goes to Write-Output. I have had "long discussions" with system administrators about what should be written to the console and what should not. If a batch file runs a PowerShell command, it will most likely capture the Write-Output command. If you want (the somewhat basic and easy in Bash) functionality of echo -n then see samthebest's answer. Note that "test3" and the Write-Output line will always append a new line to your text and there is no way in PowerShell to stop this (that is, echo -n is impossible in PowerShell with the native commands). Then, if you call the script with redirected output, something like yourscript.ps1 > out.txt, you will get test2 on the screen test1\ntest3\n in the "out.txt". If you have a script like Write-Output "test1" I think in this case you will need Write-Output. ![]()
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