All Issues
24,993 verified issues
Is it a bad idea to use the same private ssh key on multiple computers?
I recently bought a laptop from which I need to access the same remote hosts that I do from my desktop. It occurred to me that it might be possible to simply copy the private key file from my desktop to my laptop and avoid having to add a new key to the files on all the hosts I want to access. So m…
How to choose a UPS / calculate power for a new PC
Seven years ago a friend gave me a Liebert PowerSure 250 UPS and it has done well for whatever (home) PC and monitor I've plugged into it over the years. I've just ordered a new PC with the Intel core i7-920 and other nice specs for 3 HDDs, a nice graphics card etc, and opted for a 700W power suppl…
Other benefits of 64-bit OS apart from memory expansion?
I'm trying to convince somebody of the benefits of switching to a 64-bit OS but I'm having a hard time finding arguments other than "you can use more than 3GB RAM". Are there any other clearly-communicable benefits in having a 64-bit operating system?
How do I cite software in LaTeX?
I'm currently writing a 15 ECTS (quarter years worth) report as a part of my two-year masters in computer science, and I'm using LaTeX with BibTeX. In my report I use and "talk about" different pieces of software. As we know software can change when time goes on, I believe I need to be able to quot…
PDF Viewer on Windows
I've tried Foxit and Adobe's reader, but I'm not satisfied with either. Foxit has update nagging for non-critical junk. Adobe PDF reader is bloatware. Are there other options you people like?
equivalent "echo on" for linux?
How can I get to stdout all commands that run in bash script? That is output must contain commands output AND commands themselves. I found but this is not exactly the same because instead of it shows
Can I encrypt data in a way that it can be read normally but can't be copied or edited?
I want to share my 500 GB hard drive with a friend but I want to encrypt it in a way that all data can be read normally but cannot be copied or edited in any way. Is that possible?
How to route only specific subnet (source ip) to a particular interface?
How to route only specific subnet (source ip) to a particular interface? OS: Linux I know I can do easily by destination IP by using something like but I do not see how can route based on source IP.
How to take notes in PDFs in Linux
In Adobe Acrobat Pro you can do things like put little sticky notes in PDFs, highlight text, and create bookmarks. I have found this very useful for learning. In school you learn better when you put your notes right in the textbook. Some of the material is now delivered in pdf form. However I've sw…
Possible for Sublime Text 2 to save on loss of focus?
Textmate can save files when I switch focus to another application (that is, on blur). Is it possible to set this up in Sublime Text 2?
What did computers use for output before monitors?
How did the early industrial computers, such as UNIVAC, ENIAC, MARK I, etc display output before monitors existed? Did the first personal computers, like the Altair 8800 or the Simon use monitors, or did they use some alternate output as well?
How can I perform a ping every X minutes and check the response time?
I am currently working in a big company and we have serious latency issues. This is happening in a process control system, and is unacceptable (Open a valve sometimes take 2 minutes before command start) I want to double-check when the network team says "everything is alright on the network". So, I…
What happens when an SSD wears out?
Since SSDs are still fairly new, there isn't a history of posts saying "I reached my writes limit on 10% of my SSD... – and here is what happened (I.e. I lost 3 directories of work files. The entire drive just died...). Maybe it starts churning as the available sectors are reduced way down - like a…
How can I run a scheduled task as SYSTEM
I can't add SYSTEM account in task scheduler. When I try to add it becomes MYDOMAIN\SYSTEM and I get invalid user error. Can I use SYSTEM account to run a scheduled task?
Vagrant ssh fails with VirtualBox
vagrant up fails when it gets to the ssh part: Then when I subsequently try and connect using vagrant ssh or vagrant reload or similar, I get this: Please help! I'm really stumped. Kind regards, Luke
How to do "Files to store without compression" in 7-zip?
Is there any way to selectively prevent certain file types from compression in 7-zip, like in WinRAR? I'm trying to compress a huge folder (many gigabytes), and I don't want the already-compressed files (e.g. ZIP files) to be re-compressed -- they should be stored without compression.
How do I delete directory trees via batch file on Windows 7?
I want to delete the whole content of a specified folder on Windows 7 via batch file. My problem is, that 'del' or 'erase' only deletes the files, not the folders and 'rmdir' or 'rd' always deletes the specified folder with its content, but I only want to delete the content, not the folder itself. …
Removing past searches from Google Chrome's omnibar
One time I searched for in Chrome's Omnibar. Now, every time I start typing , I get the search suggestion: How do I get Chrome to stop offering me this search suggestion? If I need to edit some config file, I can do that. Please don't post answers if you haven't ensured they work first. (This is in…
modeline does not work in vim
I have a file called for bash and zsh, I put this line but if I make I get
What is meant by the terms CPU, Core, Die and Package?
Now this might sound like too many previous questions, but I am really confused about these terms. I was trying to understand how "dual core" is different from "Core 2 Duo", and I came across some answers. For example, this answer states: Core 2 Duo has two cores inside a single physical package an…