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I've collected data from different linux installations, and I've asked some linux specialists for their opinion, how many hard disk space is needed for the directory or partition of "/opt".

Because there are some very different statements on what is necessary, I would like to collect some data from the real world. What is going on in fact, not in theory?

Therefore I request everybody to check what's going on at his own linux system. You only have to put the following command in your terminal and post the result here.

Code:
sudo du -h -d 1 /opt

On my current linux installation it looks like this:

Code:
johnd@linux-system:~$ sudo du -h -d 1 /opt

21M     /opt/sublime_text

16K     /opt/lost+found

221M    /opt/pt

241M    /opt

johnd@linux-system:~$

If you like to say, which programs are installed under /opt, I would apprechiate it.

(I'm sure, I've some misspellings. Sorry for this!)

Regards
JohnD

Here you go. Only two programs I have installed under /opt are the two shown in output (both are web browsers).

Code:
bill@HP-8000-Elite ~ $ sudo du -h -d1 /opt

[sudo] password for bill: 

171M    /opt/vivaldi

188M    /opt/slimjet

358M    /opt

... BUMP ...

Anybody else want to add to this for the OP?

Slackware uses the /opt directory more than Debian based systems. When building the SuperGamer series I used all of the directories to put games into and added 2 more and modified the scripts to build. The live scripts built each folder into a squash file then into an iso. Each folder had a 4gb limit so that was the reason to add a couple of different directories to include all of the games. Even Slackware fully installed would probably use less than 1gb. I haven't kept up with KDE, but it might use the /opt folder more as it used to with version 3.2. Sorry just aged myself.

Here's what I get:

Code:
du: cannot access '/opt': No such file or directory

Y'all are about to make me think something's wrong with my 'puter!

Quote:Y'all are about to make me think something's wrong with my 'puter!

Maybe you accidentally made a typo with du command. Run this in terminal to list files/directories under root:

Code:
ls /

If you see "opt" in the output of that, then you must have typed-in du command incorrectly before. Try again by just copying/pasting this:

Code:
sudo du -h -d1 /opt

If you don't see "opt" in output, that's a surprise to me -- I thought it was always a standard directory under root even if nothing is in it.

Hello JohnD,

Code:
:~$ sudo du -h -d 1 /opt

[sudo] password for bitsnpcs: 

3.0M    /opt/youtube-to-mp3

3.0M    /opt

Only one program installed under opt, shown above.

No sir, nothing in /opt! var/opt is empty, etc/opt is empty. There are folders, but no files in them.

JohnD

gold_finger

gold_finger

supergamer

Artim

gold_finger

bitsnpcs

Artim