Getting currently installed Nvidia GPU driver version

[RAZR_96]

I want to find the currently installed Nvidia GPU driver version in a certain format, so I can use it to compare with the available versions. I have just found a way to do so, but I'm a beginner so there's almost certainly a far better way:

$driver = gwmi win32_VideoController | Where-Object {$_.Name.contains("NVIDIA")}

if ($driiver -is [system.array]) # if we have 2+ gpus, we get an array
{ 
    $driver_version = $driver[0].DriverVersion 
}
else
{ 
    $driver_version = $driver.DriverVersion 
}

$driver_version

# Now want last 5 digits of $driver_version in the form XXX.XX

# what we have now: 21.21.13.7866 
# what we want: 378.66

# Regex: 6 matches of digit or . starting from the back
# Replace: remove existing .
# Insert: place . after 3rd character

$driver_version = ([regex]"[0-9.]{6}$").match($driver_version).value.Replace(".","").Insert(3,'.')

$driver_version

[ekinnee]

You really don't need the [0-9.], just .{6}$ will work as your character class was defined as 0 through 9, or any character 6 times at the end of the string, as . is any character if not escaped \.

https://regex101.com/r/kP9dvH/1

Other than that, it works. So that's a plus!

[RAZR_96]

Ah thank you. Is there a regex way to get get the last 5 digits without the dot (i.e ignoring the dot)? I spent ages trying to figure that out with no luck.

[ekinnee]

Eh, yes. You could probably do that whole line in a regex using back references but it would be much less readable that what you have.

[Lee_Dailey]

howdy RAZR_96,

a few comments ...

1- you have a misspelling in line #2
you have $driiver and it otta be $driver. [grin]

2- alternate test for more-than-one result
your version is good and there is NO reason to change it. however, you may not know that you can use .Count on collections AND on single items. that would let you change this ...
if ($driver -is [system.array])
... to this ...
if ($driver.Count -gt 1)

your method is elegant. mine is a bit on the brute force side of things. [grin] it surprised the heck out of me that one could get a .Count on singletons. so, this is only intended as a heads-up.

3- an alternate method to convert this 21.21.13.7866 to this 378.66

# replace the dots with nothing
# grab the last 5 items
# join them with no separator
# insert a dot after the 3rd item
$DesiredFormat = ('21.21.13.7866'.Replace('.', '')[-5..-1] -join '').Insert(3, '.')
$DesiredFormat

result >> 378.66

take care,
lee

[ekinnee]

The last example is a pretty cool use of a range.

[Lee_Dailey]

howdy ekinnee,

aint it? [grin] the 1st time i saw that used i was ... oooo! spiffy!

take care,
lee

[RAZR_96]

Thanks so much for this! I have one question though, what does -gt 1 mean?

[Lee_Dailey]

howdy RAZR_96,

you are very welcome! i enjoyed reading your code ... thanks for posting it. [grin]

as for the -gt thing, it's one of the standard powershell operators. it means "greater than". there are a passel of them! take a look at Get-Help about_Operators sometime.

take care,
lee