All Issues
24,993 verified issues
Bash vs. Gnu screen : Replace Ctrl-A with Ctrl-Shift-A
I'm a new user to GNU Screen. I've been using Bash for a very long time, and I want to give GNU Screen a try. As you know, GNU Screen uses 'C-a' (Control-A) as as the command character. Trouble is, this interferes with the Line Editing feature in Bash (and GNU Readline), because Control-A in Bash w…
What is the difference between hyper-threading and multiple cores?
In a conversation with the network administator, I mentioned that my machine was a dual-core. He told me it was not. I brought up the task manager, went to the perfomance tab, and showed him that there are two separate CPU usage graphs. I have a quad-core machine at home and it has four graphs. He …
How do you run the previous command in emacs shell?
I am in terminal mode on Ubuntu, and I'm running emacs with 2 buffers open, one is a ruby file, and the other is a shell (opened by typing M-x shell ), and when I switch to the shell buffer, I want to run the same command that I ran before. I would normally just hit the up arrow in a terminal windo…
SSH: execute sudo command
I have an interactive shell script, that at one place needs to ssh to another machine (Ubuntu based) and execute something as root (the user should enter his password, but the remote command should run like noted in the script): However, I always get this error message back: OK, that's quite clear.…
How to create a virtual audio device and stream audio input with it
Here's my concrete problem: I am broadcasting a game via XFire and it uses the Windows audio device to capture any audio I receive. As I am broadcasting, other users who watch the video stream are communicating with me over Skype, and they hear themselves back within the video stream and it is enti…
What is a CPU tick?
Question: How is a CPU tick calculated and what does it represent? Does a single equate to thus if some thread reported not called for ( ) does this mean the CPU was perhaps too busy to schedule the aforementioned thread to work?
How can I keep a process alive after closing the putty session?
I am using putty to interact with Linux server. I have started a process using putty. The process is running and will take 5-6 hours. I want that process to keep running after I close the putty session. How can I keep that process alive after closing the putty session? I do not want to keep the com…
Why create a link like this: ln -nsf?
What does this do? I know creates a symbolic link, not a hard link which means you can delete it and it won't delete the thing that it's linking to. But what do the other command arguments mean? (-nf) Update: okay...so I remembered you can find this stuff out from the command line. Here's what I fo…
How to change location of hibernation file in Windows 7?
I can't enable hibernation in Windows 7 because there is not enough room on my C: drive to create the hibernation file. How can I make Windows put the file somewhere else?
How can I tell whether a process is running with administrator permissions?
I'm using Windows Vista, with UAC enabled. I've installed an application, and the installer required admin privileges. The installer then started the application. I'd like to know if the application is continuing to run with admin privileges. I've tried Windows Task Manager and Process Explorer, an…
Windows utility to save/restore window size & position history?
Is there a Windows utility that keeps a record of the size and position of all active windows for later retrieval? For example, if I have my text editor and web browser open side-by-side, and then open Outlook full screen, I'd like a keyboard shortcut to quickly switch back to the editor/browser co…
In vim, how do I make the left and right arrow keys change line?
In vim, my arrow keys work correctly, moving up, down, left, and right as expected, with one exception. At the beginning of a line, left arrow does nothing, instead of going to the last character of the previous line. At the end of a line, right arrow does nothing, instead of going to the first cha…
How to safely remove a USB drive when "Windows can't stop your 'Generic volume' device because a program is still using it."?
Sometimes when I try to remove an external USB hard drive I get the message: Windows can't stop your 'Generic volume' device because a program is still using it. I tried closing all programs on the Desktop, but it still won't give the "safe to remove" message. I am generally able to make flash driv…
Installing Cygwin packages from the command-line
Possible Duplicate: upgrading and installing packages through the cygwin command line? I'm looking for a "yum"-link method to install additional Cygwin packages from the command-line. Let's say I want to add the package "Math/bc", then ideally I'd like to be able to do it using one command as in: C…
Is there a command in Windows like ps -aux in UNIX?
In school we are learning to use UNIX with SSH. Is there any way in Windows to get output like the UNIX command, without a GUI? I am looking to see program name, PID and other details in a command line interface.
How can I make VNC faster?
I need to remotely access and use my work computer a few times a week. I'm currently using UltraVNC. I want to use VNC because of the price. I've used VNC before, mostly on my own network, where it's fast. However, VNC over the internet is incredibly slow. Even at 256 colors and lower, with Aero tu…
How to send the escape character on OS X terminal?
Connecting with telnet looks like this: I'm running this on the OS X Leopard terminal. Question is, how do I send this escape character? On a Linux terminal I'd try ESC-5 or CTRL-5, but I cannot figure out how to do this on OS X.
Why aren't all applications 'portable'?
I've recently been trying to 'install' stuff a lot less on my Windows machine (I hate installers - I need to know where programs put stuff...), choosing to use portable or standalone versions of applications instead. I put them all in a 'Programs' dir on a drive separate from my Windows partition, …
Software to backup data and files on a Windows computer
I have data and files on my system, running Windows, and want to make sure that I don't lose all the data or information when it gets toasted, either by a power surge or corrupted medium. I've heard that I should look into some kind of archive tool. What should I be looking into here in a backup pr…
Find what process is on the other end of a pipe
I'm trying to trace some odd behavior of a few processes and ran into a point I'm not sure how to trace past. The hung process, which I attached to using showed this: Okay, so it's waiting for input on fd 3, so I went to check what it is: Okay, so it's a pipe... now the question -- who is the write…