I would like to set up a cluster that has the ability to compute in parallel. (Think Hadoop using AND simulating a CentOS or Ubuntu server). I would like to get the traditional experience of setting up and managing a cluster, so AWS and other cloud is out of the question. I have a budget of $1,00...
I've configured nm-applet to run during X login, and I've connected to my home Wi-Fi network many times. Recently it no longer tries to connect to the network after logging in. In the connection's "General" tab "Automatically connect to this network when it is available" is checked.
The wired ne...
The risk here is in believing that a "hidden SSID" changes anything to the security. A non-hidden SSID means that the router will shout at regular intervals "hello everybody, I am Joe the Router, you may talk to me !". A hidden SSID means that the client machine (not the attacker's machine) will ...
I heard from a trusted computer security expert that most enthusiastic users (even if they are not professionals) using only guides from Internet and specialized software (e.g. Kali Linux included tools) can break through your home router security.
People claim that even if you have:
strong ne...
I'm not asking about password vs key authentication.
I've seen a few times (and even Amazons AWS) says that even if SSH has a major vulnerability that key authentication would make such an exploit less vulnerable. But, what if there is an exploit with how the keys are verified; isn't this just ...
I think what you're referring to is what's called the challenge-response model. With this approach the key pairs are never exposed in a manner that they could be sniffed off the wire, as is the case with sending a password over the line. And so it's deemed much safer because of this fact.
One of...
I tried to keep it high level, didn't really want to get into the semantics of the whole thing, but just enough to show the diff.
My input is :
a
a
l
a
c
g
b
c
... and so on rando alphabets.
A command or a awk statement which will give me:
a-1
1-2
l-1
a-3
c-1
g-1
b-1
c-2
basically counter for all alphabets and initialization when a particular alphabet starts.
while I appreciate you trying to help, answering a bad question like that creates a pattern for the asker that says that he can just dump random questions here and get people to write stuff for him, which we won't
this guy is somewhat of a Help Vampire right now; we can train him out of it but if you reinforce the behavior nothing can be done
@Kiwy according to the bash man page there is only difference when the command substitution contains special characters. Since "pwd" doesn't the answer is no
@Kiwy you didn't quote the $(pwd) one so it will make a difference if the directory has IFS characters in the name. I actually changed this in your question earlier. Also, backticks are now considered deprecated and many advise against using them at all - wiki.bash-hackers.org/scripting/obsolete
I'm just gonna go ahead and hit save now while I'm still working on it. @slm's not a bad guy if you lay off the caps lock, I've noticed. Pretty ffriendly after all.
@Graeme - yeah like 3. I finally threw in the towel on it. Was searching high and low for an actual tool to do what you did but none exists that I could find.
@Graeme - agree the 50 is good to have but most ppl don't have the breadth of knowledge to get 200/day. You and Patrick are 2 that seem to be able to A a variety of Q's so I would encourage you to chip away at the 150. 8-)
@slm no doubt I will get it eventually. But for now I think a break for a few days is in order. Especially since we are currently having a rare run of days where it is actually sunning in Scotland
I had the impression that obtaining written permission before including someone in acknowledgements was required. Therefore, I just wrote to someone asking for written permission to include him in the acknowledgements of a paper, and he said he didn't think is was necessary. I don't actually reca...
@Gustavo usually it is better to post a question rather than asking in chat. There is more space to explain your problem. If it is something very trivial, sometimes chat is easier.
@terdon on one paper i acknowledged a bunch of people on the #postgresql channel, and it wound up being a bit of a business. I had to track them all down. fortunately they all knew each other.
@Gustavo sorry, I have absolutely zero knowledge on Lazarus nor is Pascal one of my languages. Although generally I would say that you need to add more information to the question about what you tried and how it doesn't work (with error messages if possible).
@FaheemMitha C++ can be a pain, though sometimes it can be nice. I once read somewhere that it is mad to use all the features. I have to say I agree...
@FaheemMitha yes, KDE is based on Qt. There is a fair amount to Qt that is actually not GUI orientated these day, the portability and documentation are what really make it excel though. I think I have raved about this on here before though...
@FaheemMitha nah, just figured out enough to write that one script. Plus Gimp only uses TinyScheme which is only a relatively small subset of the real thing. My main takeaway was that trying to pick up functional programming 'on the job' isn't such a good idea as you really have to reorganise they way you think about writing code.
@FaheemMitha Yeah, never been so much of a fan of anything Java related. There is a very cool new IDE for Clojure though - lighttable.com. It supports Python as well, but I haven't had much success getting all the features to work with it though. Not sure how it fairs with other Lisps.
Under My Ubuntu 12.04, Okular worke fine until I recently run apt-get upgrade. Now I can start Okular, but when try to open a pdf file, Okular just flashes and exits.
Here is the output when I run it from the terminal:
$ okular 1.pdf
Got bus address: "unix:abstract=/tmp/dbus-42dKIwE1xj,guid=c6...
But yeah, why is an LTS release removing a symbol? That's messed up...
@FaheemMitha Well, KActivities::ResourceInstance::ResourceInstance(unsigned long, QObject*) is the translation. That's what it'd actually look like in the C++ source code.
@slm Yes, there were quite a lot of questions - approx 200. And so in your experience people don't ask a large variety of questions?
@Faheem: It turns out that after I remove Okular and then dkpg from the deb file I created last time, Okular works again. I wonder how that can be because of some dependencies upgraded? — Tim22 mins ago
I am getting this segmentation fault (core dumped) error on excecuting my c++ program on Centos. I am compiling my code using g++.
Everything was executing fine for hours. Suddenly, on executing the same executable I got the segmentation fault error.
I did strace -eopen executable
and got this...
@FaheemMitha i'd call it in scope, but as it stands now it is unanswerable without someone hand-holding him to post something that can actually be used to answer the problem
right now I'd call it opinion-based because none of us can offer anything but a guess at what the problem is
I've already discussed the hows and whys of the way the below methods work on several occasions before so I won't do it again. Personally, my own favorites on the topic are here and here.
If you're not interested in reading that but still curious just understand that the here-docs attached to t...
@terdon well, the question got one answer, and a few comments, but no real concensus as far as I can tell. I think I'll just carry on asking for permission. It seems safer, and certainly more polite.
So I have answered this before, but I found it and it sucked. Hopefully I'll do better here.
Here's the short and sweet - a heredoc is basically a file streamed to a file-descriptor.
Most people don't denote the 0<<descriptor and so you get it on <&0 stdin. ssh passes stdin to its invoked proce...
_gem_dec() { shift $# ; . /dev/fd/3
} 3<<-FUNC
_${1}() { [ ! -e 'Gemfile' ] && {
command $1 "\$@" ; return \$?
} || bundle exec $1 "\$@"
}
FUNC
for func in guard rspec rake ; do _gem_dec $func ; done
echo "_guard ; _rspec ; _rake are all functions now."
The above will ....
And that one's linked in the other answer, but - forewarning - it's really long. The first is probably more than enough for any sane person.
@Kiwy - one thing I use that here-doc function declaration for is something like python's lambdas or zsh's anonymous functions. It's pretty handy if you're the functional type.
I'm not asking about password vs key authentication.
I've seen a few times (and even Amazons AWS) says that even if SSH has a major vulnerability that key authentication would make such an exploit less vulnerable. But, what if there is an exploit with how the keys are verified; isn't this just ...
My input is :
a
a
l
a
c
g
b
c
... and so on rando alphabets.
A command or a awk statement which will give me:
a-1
1-2
l-1
a-3
c-1
g-1
b-1
c-2
basically counter for all alphabets and initialization when a particular alphabet starts.
Under My Ubuntu 12.04, Okular worke fine until I recently run apt-get upgrade. Now I can start Okular, but when try to open a pdf file, Okular just flashes and exits.
Here is the output when I run it from the terminal:
$ okular 1.pdf
Got bus address: "unix:abstract=/tmp/dbus-42dKIwE1xj,guid=c6...
I am getting this segmentation fault (core dumped) error on excecuting my c++ program on Centos. I am compiling my code using g++.
Everything was executing fine for hours. Suddenly, on executing the same executable I got the segmentation fault error.
I did strace -eopen executable
and got this...
