Frequently Asked Questions About Linux / UNIX » Ubuntu Linux http://www.cyberciti.biz/faq Every answer asks a more beautiful question. Fri, 03 Feb 2012 22:38:32 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Debian / Ubuntu Linux: Setup NFSv4 File Serverhttp://www.cyberciti.biz/faq/nfs4-server-debian-ubuntu-linux/ http://www.cyberciti.biz/faq/nfs4-server-debian-ubuntu-linux/#comments Wed, 07 Sep 2011 01:46:40 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=11014 How do I install and configure NFS version 4 server under Debian or Ubuntu Linux server operating systems using host-based authentication? ]]> http://www.cyberciti.biz/faq/nfs4-server-debian-ubuntu-linux/feed/ 0 Ubuntu Linux Stop a Processhttp://www.cyberciti.biz/faq/stop-process-ubuntu-linux-command/ http://www.cyberciti.biz/faq/stop-process-ubuntu-linux-command/#comments Sat, 23 Apr 2011 21:19:38 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10340 How do I stop a process under Ubuntu Linux using command line and GUI tools?]]> http://www.cyberciti.biz/faq/stop-process-ubuntu-linux-command/feed/ 0 Ubuntu: Mount The Drive From Command Linehttp://www.cyberciti.biz/faq/mount-drive-from-command-line-ubuntu-linux/ http://www.cyberciti.biz/faq/mount-drive-from-command-line-ubuntu-linux/#comments Sat, 23 Apr 2011 20:37:48 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10334 I'm new to Ubuntu Linux. How do I mount the hard disk drive from command line?]]> http://www.cyberciti.biz/faq/mount-drive-from-command-line-ubuntu-linux/feed/ 0 Debian / Ubuntu Linux Disable / Remove All NFS Serviceshttp://www.cyberciti.biz/faq/debian-ubuntu-linux-disable-remove-nfs-services-daemons/ http://www.cyberciti.biz/faq/debian-ubuntu-linux-disable-remove-nfs-services-daemons/#comments Wed, 16 Feb 2011 11:50:30 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10048 NFS was not designed with security in mind, and has a number of weaknesses, both in terms of the protocol itself and because any NFS installation must expose several daemons, running on both servers and clients, to network attack. I use my Debian / Ubuntu Linux based server only to server web pages and nothing else. How do I disable NFS services under Debian or Ubuntu Linux?]]> http://www.cyberciti.biz/faq/debian-ubuntu-linux-disable-remove-nfs-services-daemons/feed/ 3 Ubuntu Check RAM Memory Chip Speed and Specification From Within a Linux Systemhttp://www.cyberciti.biz/faq/ubuntu-check-ram-memory-speed-specification-within-linux-machine/ http://www.cyberciti.biz/faq/ubuntu-check-ram-memory-speed-specification-within-linux-machine/#comments Wed, 09 Feb 2011 20:22:43 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9976 I want to add more RAM to my server running Ubuntu Linux. How do I find out my current RAM chip information such as its speed, type and manufacturer name within a Linux system without opening the case? ]]> http://www.cyberciti.biz/faq/ubuntu-check-ram-memory-speed-specification-within-linux-machine/feed/ 2 Ubuntu: SIOCADDRT: File exists Error and Solutionhttp://www.cyberciti.biz/faq/siocaddrt-file-exists-ubuntu-linux-error-solution/ http://www.cyberciti.biz/faq/siocaddrt-file-exists-ubuntu-linux-error-solution/#comments Mon, 03 Jan 2011 19:47:12 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9665 I'm typing the following command under Ubuntu Linux:
route add default gw 192.168.3.2 eth0

But it is giving me out the following error:
SIOCADDRT: File exists

How do I fix this problem?]]> http://www.cyberciti.biz/faq/siocaddrt-file-exists-ubuntu-linux-error-solution/feed/ 0 Kill Process In Ubuntu Linuxhttp://www.cyberciti.biz/faq/kill-process-ubuntu/ http://www.cyberciti.biz/faq/kill-process-ubuntu/#comments Tue, 07 Dec 2010 19:48:26 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9568 How can I kill a process using the bash command prompt? Do I always need to kill the process using PID?]]> http://www.cyberciti.biz/faq/kill-process-ubuntu/feed/ 2 Ubuntu: Rename an Account [ User ID ]http://www.cyberciti.biz/faq/ubuntu-linux-howto-rename-user-account/ http://www.cyberciti.biz/faq/ubuntu-linux-howto-rename-user-account/#comments Mon, 06 Dec 2010 22:14:34 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9542 How do I rename a user name from 'tom' to 'jerry' under Ubuntu Linux?]]> http://www.cyberciti.biz/faq/ubuntu-linux-howto-rename-user-account/feed/ 3 HowTo: Flush Iptables Under Ubuntu Linuxhttp://www.cyberciti.biz/faq/flush-iptables-ubuntu-linux/ http://www.cyberciti.biz/faq/flush-iptables-ubuntu-linux/#comments Thu, 18 Nov 2010 04:07:19 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9386 How do I flush all IPv4 and IPv6 iptables rules under Ubuntu Linux?]]> http://www.cyberciti.biz/faq/flush-iptables-ubuntu-linux/feed/ 0 resolvconf: Error: /etc/resolv.conf must be a symlink Error and Solutionhttp://www.cyberciti.biz/faq/ubuntu-linux-resolvconf-error-etcresolv-conf-must-beasymlink/ http://www.cyberciti.biz/faq/ubuntu-linux-resolvconf-error-etcresolv-conf-must-beasymlink/#comments Sun, 14 Nov 2010 22:04:24 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9346 When I try to restart my BIND 9 server under Ubuntu Linux using service bind9 restart or service bind9 start command, I get the following error: resolvconf: Error: /etc/resolv.conf must be a symlink How do I fix this problem?]]> http://www.cyberciti.biz/faq/ubuntu-linux-resolvconf-error-etcresolv-conf-must-beasymlink/feed/ 1 Ubuntu Linux CD: Default Username and Passwordhttp://www.cyberciti.biz/faq/ubuntu-live-cd-default-username-password/ http://www.cyberciti.biz/faq/ubuntu-live-cd-default-username-password/#comments Thu, 28 Oct 2010 03:51:35 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9171 Can you tell me the default username and password for an Ubuntu Live CD? How do I login using Ubuntu Linux live cd?]]> http://www.cyberciti.biz/faq/ubuntu-live-cd-default-username-password/feed/ 2 Disable / Turn Off Firewall in Ubuntu Linux Serverhttp://www.cyberciti.biz/faq/ubuntu-server-disable-firewall/ http://www.cyberciti.biz/faq/ubuntu-server-disable-firewall/#comments Fri, 03 Sep 2010 04:49:12 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=8720 How do I disable firewall in Ubuntu Linux server edition?]]> http://www.cyberciti.biz/faq/ubuntu-server-disable-firewall/feed/ 1 Ubuntu Linux Set Iscsi Initiatorhttp://www.cyberciti.biz/faq/ubuntu-linux-set-iscsi-initiator/ http://www.cyberciti.biz/faq/ubuntu-linux-set-iscsi-initiator/#comments Fri, 02 Jul 2010 08:14:11 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=8068 ISCSI is a network protocol standard that allows the use of the SCSI protocol over TCP/IP networks. How do I setup Iscsi Initiator under Ubuntu Linux? How do I format and connect to an iSCSI volume under Ubuntu Linux? How do I store VMware or Virtualbox virtual machine images using iscsi storage?]]> http://www.cyberciti.biz/faq/ubuntu-linux-set-iscsi-initiator/feed/ 6 Ubuntu Linux Install MySQL Server Version 5.xhttp://www.cyberciti.biz/faq/install-mysql-server-5-on-ubuntu-linux/ http://www.cyberciti.biz/faq/install-mysql-server-5-on-ubuntu-linux/#comments Wed, 23 Jun 2010 19:53:51 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=7931 How do I install Oracle (Sun) MySQL database server v5.x under Ubuntu Linux operating systems? How do I add a new user and database for Apache web server and php access under Ubuntu Linux? ]]> http://www.cyberciti.biz/faq/install-mysql-server-5-on-ubuntu-linux/feed/ 0 Linux: Allow Normal Users To Take Down eth1:N But Not eth1 Itselfhttp://www.cyberciti.biz/faq/linux-allow-normal-users-to-take-down-eth1n/ http://www.cyberciti.biz/faq/linux-allow-normal-users-to-take-down-eth1n/#comments Wed, 16 Jun 2010 09:16:19 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=7883 I'm using sudo to grant permission to end users under Ububtu Linux. How do I allow users to take down eth1:N but not eth1 itself using sudo?]]> http://www.cyberciti.biz/faq/linux-allow-normal-users-to-take-down-eth1n/feed/ 0 HowTo: Reload (re-read) Partition Table In Ubuntu Linuxhttp://www.cyberciti.biz/faq/debian-ubuntu-reload-partition-table/ http://www.cyberciti.biz/faq/debian-ubuntu-reload-partition-table/#comments Tue, 25 May 2010 11:54:00 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=7492 How do I reload the partition table in Ubuntu Linux without rebooting the systems?]]> http://www.cyberciti.biz/faq/debian-ubuntu-reload-partition-table/feed/ 9 Ubuntu: Mount Encrypted Home Directory (~/.private) From an Ubuntu Live CDhttp://www.cyberciti.biz/faq/ubuntu-mounting-your-encrypted-home-from-livecd/ http://www.cyberciti.biz/faq/ubuntu-mounting-your-encrypted-home-from-livecd/#comments Thu, 13 May 2010 06:29:13 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=7408 Recently my old desktop system crashed and I brought a new Ubuntu Laptop from Dell. To access my data from old hdd; I've attached my desktop harddisk using an external USB case. Now my old data is stored using external USB hard disk. How do I recover data from encrypted ~/.private home directory using an Ubuntu Live CD and copy it to existing laptop drive using known passphrase?]]> http://www.cyberciti.biz/faq/ubuntu-mounting-your-encrypted-home-from-livecd/feed/ 8 Ubuntu Linux Display List of Ethernet Adapterhttp://www.cyberciti.biz/faq/show-ethernet-adapter-ubuntu-linux/ http://www.cyberciti.biz/faq/show-ethernet-adapter-ubuntu-linux/#comments Sun, 14 Feb 2010 13:04:42 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10009 How do I display a list of all installed Ethernet adapters on Ubuntu Linux?]]> http://www.cyberciti.biz/faq/show-ethernet-adapter-ubuntu-linux/feed/ 0 HowTo: Check RAM Size In Ubuntu Linuxhttp://www.cyberciti.biz/faq/check-ram-in-ubuntu/ http://www.cyberciti.biz/faq/check-ram-in-ubuntu/#comments Mon, 01 Feb 2010 21:06:12 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9932 How do I check amount of RAM in my Ubuntu Linux laptop or desktop system using GUI and command line tools?]]> http://www.cyberciti.biz/faq/check-ram-in-ubuntu/feed/ 0 HowTo: Linux Remove a PDF File Password Using Command Line Optionshttp://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/ http://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/#comments Wed, 13 Jan 2010 07:25:49 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=6294 I get lots of e-bills (utility, telephone, Internet, mobile, cable and so on) in a PDF format for my small business and I need to forward those to my accountant. However, all PDFs files are password protected. I don't want to share my account password with anyone to just open my bills. Evince is a PDF document viewer capable of displaying password protected files but it cannot remove the password. How do I remove a password from all PDFs under Ubuntu or any other Linux distribution in a batch mode? ]]> http://www.cyberciti.biz/faq/removing-password-from-pdf-on-linux/feed/ 17