How to uninstall Ubuntu 13.04
location: ubuntuforums.com - date: May 24, 2013
I am trying to remove ubuntu 13.04 off my Dell Inspiron N5110. I want to completely remove the ubuntu operating system in order to put windows 7 on(I have the reinstallation disk). Thanks!
Flush DNS in CentOS
location: linuxquestions.com - date: December 20, 2009
I use "ipconfig /flushdns" in Windows to flush DNS. I wonder what is the equivalent of this command in CentOS.
Clearing DNS Cache
location: linuxquestions.com - date: May 26, 2013
Just wanted to say, before I started this thread, I did do some research on the Internet as well as the forums.
I'm in the process of migrating a few sites from one server to another, and in the process, instead of changing the DNS records, I modified my hosts file to point to the new server. The new server is running Nginx and several server blocks. I've had to change the hosts file a few times, however this evening the cache seems to have not cleared yet, and I can't find a manual way of clearing the cache. I've even tried rebooting as a last resort.
If anyone has any suggestions, I'd love to hear them. Thanks.
HOW TO: install Lucid/10.04 LTS on Xen 3.1 with xentools/debootstrap
location: ubuntuforums.com - date: May 12, 2010
Following are the steps I took to install Lucid on Xen using Steve Kemp's fantastic xen-tools package. I did some cursory research and couldn't find any Lucid templates, so I modified the existing templates. It's not very elegant, but it appears to have gotten the job done (many VMs running for days now without problems).
UPDATE: The dev version of xen-tools, and presumably debootstrap, has lucid/pygrub support, so pretty soon these instructions will be redundant (i.e., you might take a look at those versions as well/instead).
dom0 running Debian Lenny with kernel 2.6.26-2-xen-amd64 and Xen 3.2 (community, of course)domU Ubuntu 10.04 LTS
Copy files from edgy.d template (latest available) to lucid.d.
cp -r /usr/lib/xen-tools/edgy.d /usr/lib/xen-tools/lucid.d
Link debootstrap gutsy profile (latest available) to lucid.
ln -s /usr/share/debootstrap/scripts/gutsy /usr/share/debootstrap/scripts/lucid
Link current xen directory (many tools expect to find
how to make linux 11.04 default os
location: ubuntuforums.com - date: June 29, 2011
hi i am using windows7 and ubuntu 11.04 64 bit. i want to make ubuntu a default os to load . How to do it i am new to ubuntu so i need your help .regards
HOW TO: Firefox cache in ramdisk (tmpfs)
location: ubuntuforums.com - date: November 23, 2008
I was trying to find a way to set up a ramdisk and have firefox store the cache there. After a bit of reading this is what I found and did.
Step 1: Make a place to mount the ramdisk. In the terminal type:
sudo mkdir /media/ramdisk
Where /media/ramdisk is where you will mount the ramdisk.
Step 2: Mount the ramdisk
sudo mount -t tmpfs -o size=64M,nr_inodes=10k,mode=0777 tmpfs /media/ramdisk
I set the permisions to 777 which allows anybody and everybody to access it. Set these as you wish
Step 3 In firefox: Set the cache location to you new ramdisk
Reference link: http://www.infohole.com/blog/computi...ache-location/
in the URL address bar. Search for
or add a new string by right clicking and choosing new. Then set the location to your ramdisk. In my case I set it to
Managed DNS server lists and dnsmasq DNS cache
location: linuxquestions.com - date: December 15, 2008
I tried to be as descriptive as possible within my limitations (English is not my native language), so if the title doesn't describe my question well I apologize in advance. I've read the sticky on this forum section before posting, but even so I'm not 100% sure this post belongs here (although it relates to the handling of DHCP and DNS), so if it doesn't I apologize in advance as well.
My question is: I am using Xubuntu 8.10 "Intrepid Ibex" on a WiFi-enabled laptop, and I have it connect to different access points. IP configuration is usually done via DHCP. This means I can't have a static DNS server list (in /etc/resolv.conf).
I would like to use dnsmasq as a local DNS cache. For it to be effective, I would need a way to have it put 127.0.0.1 in front of anything it receives via DHCP on the DNS server list. How do I do that? Editing /etc/resolv.conf won't work, NetworkManager overwrites it whenver I get new DNS server addresses, and... it sure makes my lif
[SOLVED] Does Linux have local DNS cache?
location: linuxquestions.com - date: June 29, 2011
I found that one of my computers was issuing a DNS request to a domain on my local network every time I send a query. I've look around and saw several programs you could install for DNS local cache, but does it not come with some application by default? If it matters, I'm running Ubuntu 11.04 with DHCPD and Bind9.
Also, I did add nameserver 127.0.0.1 to /etc/resolv.conf, and it's listed before my other nameservers.
Thanks in advance
location: linuxquestions.com - date: October 28, 2010
How would I instruct my Linux system to use the local network's DNS cache, located at lets say 192.168.1.254, or the ISP's DNS cache, located on 188.8.131.52, if the LAN nameserver is unavailable?
Speed up your Internet browsing on Ubuntu Linux with a DNS Cache server
location: ubuntuforums.com - date: April 2, 2011
Most Linux distributions, unlike OpenSuSE, OS X and Windows, do not have a DNS Cache service installed by default.
Your computer will need to lookup a website’s IP address every time you visit it. The lookup request is passed on to the DNS server(s) specified in the /etc/resolv.conf file. It will take the server a few ms (milliseconds) at best to respond. It can take a ‘long’ time if your using a slow Internet connection (or a wireless LAN).
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