Saving file package version in a variable

RouterOS Scripting
1

Hi guys!

I’m trying to create obtain the package version of one npk file and store it into a variable, but in every way i tried, my variable stills empty.

:local packageVersion (/file get (find ".npk") package-version)
:put $packageVersion

Can somebody help me with a solution please?

2

the file is called .npk?
why you use () ???

3

No the file is named as a mikrotik firmware, something like "routeros-arm-6.49.10.npk". I noticed this after posting, i changed to:

:local packageVersion [/file get [find type="package"] package-version]

I didn't even think about the use (), i'm kind new to scripting, thanks for the hint!
It's working with the script above. Thanks man!

4

If you know Linux/UNIX, the are similar to `` backtick to run a command and replace result in-place.

5

Yes and the new way of doing this in UNIX/Linux, not using back tics chars. is like this.
Use dollar sign and regular parentheses.

$(cat /etc/passwd)
6

It’s likely better thinking of the RouterOS CLI in terms of a REPL for a programming language, than ANY UNIX shell.
It’s thinking CLI is more like Linux/UNIX is where the trouble starts :wink:

FWIW, I’m not sure $() is newer than ``. The $() is more for variable assignment IMO, while backtick works anywhere.