Dwarf Fortress starting during apt-get upgrade

https://askubuntu.com/questions/938606/dwarf-fortress-starting-during-apt-get-upgrade

by rayalez • 9 years ago

221 53 9 years ago

shmerl• 9 years ago

I didn't know Dwarf Fortress was packaged in Debian. The last time I tried playing it on Linux, it was annoyingly 32-bit.

readams• 9 years ago

Some programs are 32-bit, but not to such an annoying extent.

Ao7bei3s• 9 years ago

It's mostly about all necessary libraries being available for the same architecture as the binary.

This means either having separate 32bit libraries (typical for closed source applications shipping together with their libraries) or having multiarch libraries (as modern linux distros do).

pawadu3• 9 years ago

I didn't know Dwarf Fortress was packaged in Debian

well, goodbye productivity.

I wonder if I can run it on a production server without anyone noticing...

mikekchar• 9 years ago

The text renderer seems to use considerably less CPU that the graphics one. I've been tempted to set up a docker image...

tome2• 9 years ago

The SO question doesn't imply that it is, just that it's installed on the user's machine.

mnw21cam2• 9 years ago

Yeah, there's a 64-bit version now.

jwilk2• 9 years ago

It's not packaged.

giancarlostoro• 9 years ago

When I did my first few programming courses we were using C and on Windows, and using system("pause"); was our way of keeping cmd from closing. So as a joke over the years I've made a pause script for Linux in Python, Perl and even bash just so I can make such code valid.

But putting a whole game in place of a standard Linux util sounds like awesome menace, reminds me of the sl command (steam locomotive) which you can install on Debian (and maybe other distros?) for those who may typo ls they'll get a fun surprise :)

pawadu3• 9 years ago

wasnt getc() available on windows?

Const-me• 9 years ago

It was and still is, the name is _getch() from <conio.h>

However, I can see how for a beginner programmer system("pause"); is more intuitive than printf/_getch() combo. Especially if said programmer is already familiar with windows shell and its commands.

c0nfused• 9 years ago

sl also starts for LS too in case you have capslock on.

ChuckMcM• 9 years ago

Just wait till they release "Ground Control Center" (gcc) :-) For a long time there were two things called 'git' and installing the 'wrong' one invariably led to similar hijinks.

exikyut• 9 years ago

What was the other one?

Triave• 9 years ago

I'm guessing the interactive fiction interpreter [1], which predated the version control system by a couple of years.

[1] http://web.archive.org/web/20120826174233/http://diden.net/i...

djvdorp• 9 years ago

I just spilled my coffee

grabcocque• 9 years ago

The fact that the dwarf fortress binary is just 'df' was asking for trouble. In hindsight seems amazing nobody reported this before.

pawadu3• 9 years ago

That's how i feel about "convert" from imagemagick

tome2• 9 years ago

And "import"!

sohkamyung• 9 years ago

Which is why I use graphicsmagick [1] instead. The imagamagick executables becomes options behind the 'gm' executable.

[1] http://www.graphicsmagick.org/

empath75• 9 years ago

packer has a name collision, too.

DrJokepu• 9 years ago

PostgreSQL's "initdb"!

0xfeba• 9 years ago

`testparm` for Samba.

concede_pluto• 9 years ago

http://pubs.opengroup.org/onlinepubs/009696799/utilities/df.... says what df does on any POSIX system. I love Dwarf Fortress but running it as root is more !!fun!! than I'm looking for.

vbezhenar• 9 years ago

Don't trust $PATH in scripts. Use `/bin/df`.

iso-8859-1• 9 years ago

But then it's not portable across distros and to BSD's. On FreeBSD, bash is in /usr/local/bin/bash (if it is installed)

Do you also write "if /usr/bin/[ $? != 0 ]; then ..." ?

lottin• 9 years ago

df is a standard utility, like ls or cd. Invoking df on a POSIX system should do the expected thing, and if it doesn't it means something is broken.

mnw21cam2• 9 years ago

On Unix/Linux, there is very little stopping the superuser from introducing new and inventive kinds of breakage, such as in this case. This one is just a little more amusing than most. But seriously, if root wants to install a new command called df and have it higher up in the PATH than the standard utility, why should the OS argue?

JdeBP• 9 years ago

... only if one has used

    getconf PATH

to set the path to the one that guarantees that.

* http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ge...

* http://pubs.opengroup.org/onlinepubs/9699919799/functions/co...

* http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/uni...

rmc• 9 years ago

Actually cd is a shell built in, not a separate binary

pwdisswordfish2• 9 years ago

The real WTF is that APT spawns an external process to check disk usage, instead of invoking statvfs() on its own.

Some cases are less clear-cut, however. For example, the Debian 'nodejs' package installs node.js binary as /usr/bin/nodejs and not /usr/bin/node because it conflicts with another package: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=614907#108

And let's not forget rename(1) from util-linux versus the Perl rename(1)...

orf• 9 years ago

It could be called from a bash script rather than from within apt itself.

phaemon• 9 years ago

It isn't `apt`. See how they mentioned that `mysql` packages were installing? Well, in the `preinst` shell script, in the .deb, there is the line:

`if LC_ALL=C BLOCKSIZE= df --portability $DATADIR/. | tail -n 1 | awk '{ exit ($4>1000) }'; then`

There's `df` being called without the full path and that's what would be spawning Dwarf Fortress.

glandium2• 9 years ago

That doesn't make it much better though. Parsing the output of df (with a useless tail -1) is kind of awful when you can use something like stat -f -c %a.

lorenzhs• 9 years ago

On the node thing: that decision has recently been reversed by the technical committee, effective in the next release (it is in unstable now). See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=862051 - nodejs will now simply be 'node'.

proactivesvcs• 9 years ago

Why not have some Fun while waiting for upgrades to install? The bug is that apt doesn't carry on in the background ;-)

_pctq• 9 years ago

Using aliases in `~/.bashrc` rather than putting scripts or symlinks in $PATH is a good mean to avoid those kind of problems, provided bashrc includes code to quit if ran in non-interactive mode (default at least on ubuntu).

Many use aliases only to specify default command parameters, but it works just as well to provide an execution path, like, in this case:

    alias df=/home/my_user/games/dwarf_fortress/df

It would only be executed in interactive sessions, this way, which should guard well enough against system code interpreting it.

Of course, this still means user can't use system's `df` easily, but I guess they don't use it anyway since they did not realize the problem until that upgrade.

cpach• 9 years ago

Why not name the alias something else than “df”? :) dfortress or something like that. Then it won’t collide with df(1).

oelmekki3• 9 years ago

This is by far the best approach, yes :)

My point was more to show a way this particular user could have achieved the same result without their problem.

Plus, we can't expect users to know all the system tools, this is a good way to isolate "user space" from "system space", so I guess taking the habit to use aliases rather than putting things in `/usr/local/bin/` makes sense by itself (except when we want indeed to override an executable provided by system, or we want indeed to provide a new system tool).

AndrewOMartin• 9 years ago

They could still type /bin/df, and they could also use:

alias freespace=/bin/df

Though then they'd have to uninstall FreeSpace 2.

pwdisswordfish2• 9 years ago

this still means user can't use system's `df` easily

\df

There you go.

oelmekki3• 9 years ago

Awesome, didn't know about that. Thanks!

jwilk2• 9 years ago

https://bugs.debian.org/752114

Dwarf Fortress starting during apt-get upgrade

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