I don't want to use bash.
I've looked for any parameter in the FileInfo object, but there isn't something that tells you if the file is executable.
How do I do this?
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1 Answer
Use the standard test utility (/usr/bin/test on Ubuntu):
$isExecutable = $(test -x '/path/to/some/file'; 0 -eq $LASTEXITCODE)
Note: One would expect that using Get-Command with a file path would indicate whether the target file is executable, but that is not reliable as of PowerShell 7.0: any existing file - whether executable or not - is currently reported as a command (of type Application) - see GitHub issue #12625
# !! SHOULD work, but does NOT as of PowerShell 7.0:
# !! any existing file is reported as executable.
$isExecutable = [bool] (Get-Command -ErrorAction Ignore '/path/to/some/file')
Note: Should this ever be fixed, note that you'll always need to specify a path rather than a mere file name, even for files in the current location, e.g., Get-Command ./foo rather than Get-Command foo, because the latter would only look for an foo executable in the directories listed in $env:PATH.
