Re:The increased use of PowerShell in attacks [pdf]
by YeGoblynQueenne on Saturday May 20, 2017 @04:23PM
(#14384167)
>> What the hell does `2>&1` even do?!
It redirects standard error to standard out? That's what it does in powershell anyway. Frex, I got this line in my $PROFILE:
$p2 = & $env:Python_2/python.exe --version 2>&1
To get the current Python 2 version on my machine. I'm not really sure what it's an alias for, but I like having the shortcut of the more concise syntax.
The real problem is that, for some reason, python.exe --version outputs to standard _error_. That, I don't really get. I'm sure there's a good reason for it but it's not obvious and that's what's making the "2>&1" at the end hard to figure out.
It redirects standard error to standard out? That's what it does in powershell anyway. Frex, I got this line in my $PROFILE:
To get the current Python 2 version on my machine. I'm not really sure what it's an alias for, but I like having the shortcut of the more concise syntax.The real problem is that, for some reason, python.exe --version outputs to standard _error_. That, I don't really get. I'm sure there's a good reason for it but it's not obvious and that's what's making the "2>&1" at the end hard to figure out.