In one of my recent PowerShell scripts I needed to find out if certain commands (in my case “svn”, “git”, “ant” and “mvn”) were available or not. I wrote this small function that tries to call the given command and returns whether it is callable.
-
function commandAvailable($cmd, $options)
-
{
-
$error.clear();
-
& $cmd $options | out-null;
-
if ($error[0])
-
{
-
write-host ("Command " + $cmd + " " + $options + " is not available") -foregroundcolor "red";
-
return $false;
-
}
-
return $true;
-
}
-
-
write-host (commandAvailable "svn" "–version");
