All Issues
24,993 verified issues
How do I fix a "cannot open display" error when opening an X program after ssh'ing with X11 forwarding enabled?
After launching the X11 app (XQuartz 2.3.6, xorg-server 1.4.2-apple56) on my Mac (OS X 10.6.8), opening an terminal in X11 and running , I then to my Ubuntu 10.04 VM (running on VMware Fusion). When I run (for example), I get: returns nothing. But if I into my Ubuntu 11.04 machine, works. returns "localhost:10.0". I tried while sshed into my VM and then running , but I get: What could be different in the configuration of the two difference Ubuntu machines that would explain why one works and the other doesn't? Update: As suggested by Zoredache in the comment below, I ran , but I continue to have the same problem.
Unix zip directory but excluded specific subdirectories (and everything within them)
I'm trying to zip a directory (on Unix via SSH) but I need to exclude a couple of subdirectories (and all files and directories within them). So far I have this: That doesn't seem to work though. I also tried However that will still include subdirectories within ignoreDir1 and ignoreDir2. The subdirectory structure in the directories that I want to exclude is quite substantial so I can't simply add each directory to the -x argument. Does anyone know how to do this?
How to join/merge many mp3 files?
Searching Google on how to join/merge many mp3 files, it suggests that I should just them together. That might "work", but clearly it is not the correct way to do it, as each header and set of IDv3 tags will also be concatenated. Does a Linux program exist that can be scripted to join/merge many mp3? Can mplayer/mencoder/ffmpeg do it?
Disable "Do you want to change the color scheme to improve performance?" warning
Sometimes this dialog box will pop up (see screenshot below). Every time it appears I select "Keep the current color scheme, and don't show this message again". Windows then reminds me again -- either the next day or after reboot, or sometimes another 5 minutes later. Do you want to change the color scheme to improve performance? Windows has detected your computer's performance is slow. This could be because there are not enough resources to run the Windows Aero color scheme. To improve performance, try changing the color scheme to Windows 7 Basic. Any change you make will be in effect until the next time you log on to Windows Change the color scheme to Windows 7 Basic Keep the current color scheme, but ask me again if my computer continues to perform slowly Keep the current color scheme, and don't show this message again Is there some reason why Windows is ignoring/forgetting my attempts to suppress the dialog? I'd love to never ever see it again, it's annoying, and it alt-tabs me ou…
Connect to the host machine from a VirtualBox guest OS?
I'd essentially like to access my host computer from the guest in VirtualBox. Is there an IP address given for my host which I can use from the guest? Are there extra steps required to set this up? I'd like to access my host's Apache, FTP, and SSH services.
What does Robocopy mean by tweaked, lonely, and extra?
The Robocopy documentation for the option is simply “Includes ‘tweaked’ files”. What does “tweaked” mean? The Robocopy documentation for the option is simply “Excludes ‘lonely’ files and directories”. What does “lonely” mean?
Copy entire file system hierarchy from one drive to another
I would like to copy the entire file system hierarchy from one drive to another..i.e contents of each directory as well as regular files in Linux platform. Would be gratefull to know the best way to do that with possibly Linuxes in-built functions. The file system is a ext family.
Increase the maximum number of open file descriptors in Snow Leopard?
I am trying to do something that requires a large number of file descriptors is as high as Snow Leopard wants to go; beyond this results in /usr/bin/ulimit: line 4: ulimit: open files: cannot modify limit: Invalid argument. I want to raise the number much higher, say 100000. Is it possible?
What is the "You have new mail" message in Linux/UNIX?
Sometimes, when I log into a box and 'su' to root, I get a cute little message saying I have mail (thank GOD it's not AOL). Where is this mail? What does it contain? Who/What sent it? How important is it? Is this even actual "mail" in the same sense as email? Or is it just my system telling me something? EDIT: In relation to this question, would I be able to send myself mail using the sendmail program like so: ?
How to check which timezone in Linux?
Is there a way to check which time zone I'm currently in on Linux?
How do I extract files from an MSI package?
We have some old patches that we want to get the files from but don't wish to spend the time installing them to a machine. Can anyone advise a way to extract files from an MSI installation package?
CMD cd to other drives except C:\ not working
Possible Duplicate: Using cd Command in Windows Command Line, Can't Navigate to D:\ I am unable to or to any other drives. I am facing this problem from last 2 months but until now was not that important to me. I have checked multiple times with 2-3 anti-virus but it doesnt show any, and according to me there shouldnt be, because I visit only a few top sites, use genuine software and plug only my usb drive in PC. This is what happens when I try to cd
What is the Linux command to find out hardware info?
I need to find out hardware information for the below items under Linux: CPU (and cores) CPU speed Memory Hard disks OS version Any advice?
How to delete a single cached username from Chrome?
Somewhere along the line I accidentally typed my password into the username field on a website in Chrome. Now every time I go back to that site my password is shown as an option to fill as my username. I didn't specifically save the username/password combo, it is just the little drop down that appears when you start to type. Is it possible to clear this single item? I would rather not have to clear all form data.
Restart a Windows service from the command line
Is there a way to restart a Windows service from the command prompt?
Windows Activation FAQ: How do language, version, 64-bit or 32-bit, and source affect ability to install and transfer Windows licenses?
We get a lot of questions on Super User about Windows activation and licensing. This question is an attempt to answer the most common questions in one place with a canonical answer. When reinstalling Windows, the following questions often come up: Can I transfer the copy of Windows from my old computer to a new one? Does the license key on the sticker on my computer work on any computer? If I have a 32-bit version, can I install a 64-bit version? I have an OEM version of Windows, but only a retail disk. Can I still use it? I want to install Windows with a different language. Do I need a new license in that language? I changed some hardware. Will I be able to reactivate my computer? Can I back up my activation before doing a reinstall? How many computers can I install my license on? Do I have to deactivate my old installation before transferring a license? If so, how? How does licensing work in Windows ? What are the restrictions on transferring, reinstalling, and changing versions of …
Why are we still using CPUs instead of GPUs?
It seems to me that these days lots of calculations are done on the GPU. Obviously graphics are done there, but using CUDA and the like, AI, hashing algorithms (think bitcoins) and others are also done on the GPU. Why can't we just get rid of the CPU and use the GPU on its own? What makes the GPU so much faster than the CPU?
How do file permissions apply to symlinks?
Let's say you have this structure: is a link to another somewhere else on the system. Now let's say I the directory and all contents inside it. Does my in receive those permissions? Also, let's say we have the same situation but reversed. If I apply the permissions on the file being linked to, how does that effect the link?
How to specify level of compression when using tar -zcvf?
I gzip directories very often at work. What I normally do is Is there a way to specify the compression level here? I want to use the best compression possible even if it takes more time to compress.
Why can't I email myself at: MyEmail@74.125.235.55?
I opened and typed . It shows me: I have a Gmail account, so I emailed myself but instead of I used . Response: This is an automatically generated Delivery Status Notification THIS IS A WARNING MESSAGE ONLY. YOU DO NOT NEED TO RESEND YOUR MESSAGE. Delivery to the following recipient has been delayed: Message will be retried for 2 more day(s) Technical details of temporary failure: The recipient server did not accept our requests to connect. Learn more at http://mail.google.com/support/bin/answer.py?answer=7720 [74.125.235.54 (1): Connection refused] ----- Original message ----- MIME-Version: 1.0 Received: by 10.223.93.196 with SMTP id w4mr3261626fam.44.1309944998035; Wed, 06 Jul 2011 02:36:38 -0700 (PDT) Received: by 10.223.104.194 with HTTP; Wed, 6 Jul 2011 02:36:37 -0700 (PDT) Date: Wed, 6 Jul 2011 17:36:37 +0800 Message-ID: Subject: test From: Joseph To: xxxxxx@74.125.235.54 Content-Type: multipart/alternative; boundary=20cf3054a49348815504a763560c testtest I did not receive the em…