All Issues
24,993 verified issues
SSH access to office host behind NAT router
I would like to access the ssh port of my office linux host from home. Unfortunately the host is located behind a NAT router. So, the IP address is not publicly available. There is however access to another internet host (Server) which is unfortunately only non-root access. After a while of searchi…
Using mklink /h results in "Access is denied."
From command prompt with Administrator privilages: I'm on Vista x64. Using or instead of works. What's the problem? Related: Access is denied error, when I mklink on Windows 7.
Is there an image viewer that takes images on STDIN?
I'm looking for an image viewer that takes data on and can be run like:
How to extract part of a string in Windows batch file?
Suppose I have a value such as "Abc_123" that's stored in a variable in a batch (cmd) file. I want to end up with a variable that contains only "123". Is there any built-in way to do this? I'm not terribly picky about the method, or performance, as long as it's built in to a typical Windows (Vista/…
Taskkill.exe: don't throw an error if the process is not running
I'm running a Visual Studio post build event that shuts down IIS if it's still running after compilation: The following works perfectly if IIS is still running, but throws an error if it has already stopped: Is there a way to tell taskkill to ignore the problem if it can't find a matching running p…
Merge two audio channels (stereo) into one (mono) on GSM6.10 using FFMPEG
I would like to know if it is possible to merge stereo audio into mono on a GSM6.10 audio file using FFMPEG. If it is, please provide the command to achieve this. Otherwise, is it possible to convert GSM6.10 to WAV PCM with FFMPEG? I could then merge the channels on the WAV PCM. If there is another…
How do I keep my bash history across sessions?
I am working on a x86 target running fedora 9. Whenever I reboot it, my history returns to some state, and I do not have commands I did in the sessions before the reboot. What I have to change to have updated history I had before reboot?
How badly do SSDs degrade without TRIM?
SSDs have been out for a few years, and have seen all kinds of usage patterns. Windows and Linux support the TRIM command, with Mac OS still trailing behind here. Update (2011): It appears OSX Snow Leopard has support for TRIM in Apple-branded SSDs. There is a utility that enables TRIM in non-Apple…
Increasing disk space on VirtualBox
Is there an easy way to increase virtual hard disk space on VirtualBox?
Why can't a 64 bit OS run a 16 bit application?
Why is it that: a 32-bit OS, when installed on a 64-bit CPU, can run old 16-bit applications, but if you install a 64-bit OS it can't run those applications directly and need some sort of emulation (that doesn't always work perfectly)? To be more specific, I have an 64-bit processor (Intel Core 2 D…
How does a NAT server forward ping ICMP echo reply packets to users?
NAT uses an IP address port number combination to hash the outgoing requests. Since ping requests consist of ICMP echo request packets, they do not have any associated port number. How does a NAT server forward the replies to the hosts inside the network?
How do I tar ball a directory hierarchy with soft links in Linux?
How do I tar ball/compress a directory hierarchy with soft links in Linux?
How to clear DNS cache in Ubuntu?
I'm having problems related to DNS solving in my Ubuntu 9.10. Prior complaining to my ISP I would like to refresh my local DNS cache, like in Windows we do . How can I do that in Ubuntu?
Midnight Commander (MC) installer for Mac OS X
I use MC on Windows and Linux and would like to use it on my Mac. Can someone point me to an URL where I can download a binary setup/install?
How to find the stream behind a Flash player
I am watching a Flash stream. I can watch the same stream in two different players (set up by someone else), but I don't like any of them. Is there a way I can find/get/extract the direct link to the flash stream that those two players are playing? So that I can watch it using a different player? E…
How do I make all file types open in the internal editor in eclipse?
When using the open file dialog on Eclipse, many file types open in the internal editor as expected (.java, .txt). However, others open in an external editor. For example on my system attempting to open .sh file causes it to open it in emacs, and .py files open in bluefish. How do I tell eclipse to…
Use rsync to copy all files except for certain filenames with a certain extension
I have two same-size flash cards, and I want to copy contents of one to the other based on the following rules: I want all directories and subdirectories in place I want to exclude files of type .FOO, .BAR, and .ZIM (all other files are copied) Bonus: It'd be cool if it outputs the filenames as the…
How can I scan multiple pages into a single PDF?
How could I scan multiple pages into a single PDF on the Mac? This is for document archival (mostly invoices and receipts). Ideally, the results should be somewhat searchable (but manually giving it proper filenames and putting it into appropriate folders will do for now).
"Open With" dialog ignores my selection
I am running Windows 7 x64. I have a file type that I want to associate with Microsoft Access 2003. I right-click on the file and select Open With->Choose Default program. In the "Open With" dialog, I select the browse button. I choose Program Files (x86)\Microsoft Office\Office11\msaccess.exe and …
Pulling the plug out for 10 seconds
When calling support the other day he told me to reset my DSL modem by pulling out the power, leave it out for 10 seconds, and then plug it back in. This is something I have heard many times with different kinds of equipment. I have also heard it in relation to computers. That when you turn it off,…