Programmer blog

Docker supports Ubuntu versions: Ubuntu Vivid 15.04 (64-bit) Ubuntu Trusty 14.04 (LTS) (64-bit) Ubuntu Precise 12.04 (LTS) (64-bit) Ubuntu Raring 13.04 and Saucy 13.10 (64 bit)  For both Vivid and Trusty you need nothing. It will work out of the box. Others will require some modifications. (Updating of some things, like kernel or installing with wget on 13.04) 1. To install docker from a repository do so: sudo apt - get update sudo apt - get install docker . io sudo ln - sf / usr / bin / docker . io / usr / local / bin / docker sudo sed - i '$acomplete -F _docker docker' / etc / bash_completion . d / docker . io 2. Now run it with: sudo apt - get install lxc - docker 3. Make it run on system boot: sudo update - rc . d docker . io defaults 4. Ready to go! Run container with an Ubuntu: sudo docker run - i - t ubuntu / bin / bash To disconnect, or detach, from the shell without exiting use the escape sequence Ctrl-p + Ctrl-q . 

There are 2 common repositories that come nowdays for centos. They contain tasty things, while they are absent in official repositories. CentOS 5: wget http : //dl.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm wget http : //rpms.famillecollet.com/enterprise/remi-release-5.rpm sudo rpm - Uvh remi - release - 5 * . rpm epel - release - 5 * . rpm CentOS 6: wget http : //dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm wget http : //rpms.famillecollet.com/enterprise/remi-release-6.rpm sudo rpm - Uvh remi - release - 6 * . rpm epel - release - 6 * . rpm You can check you are successful like so: ls - 1 / etc / yum . repos . d / epel * / etc / yum . repos . d / remi . repo / etc / yum . repos . d / epel . repo / etc / yum . repos . d / epel - testing . repo / etc / yum . repos . d / remi . repo Now you are only left to activate Remi repository: sudo vi / etc / yum . repos . d / remi . repo In [remi] section we need to change enable...

Tmux is a handy terminal manager that allows you to switch between terminal sessions easily. Without losing history or windows upon ssh disconnects or similar. It is like screen , just better. (First of all because of using client-server based technology... ) Here is my minimal keyboard shortcuts guide that allows you to start using Tmux in a blink of an eye. Endless advanced commands and hotkey combinations you could always find by entering "man tmux" in a terminal. Tmux is installed quite easily in most of common linux based systems. Just type: Ubuntu: $ sudo apt - get install tmux CentOS: $ sudo yum install tmux This allows you to start using by starting it with $ tmux a | | tmux new This command first tries to attach to existing running tmux instance and creates new in case it is not found. Ctrl+b d - Will allow you to disconnect at any time. (This is also a way it is happening when you loose ssh session. How to connect - look earlier) Each sess...

rsync is a command for remote sync. It is used to synchronise one location to another in a simple way. Location is meant to be local directory, server or remote web server or whatever accessible by ssh. Advantages of using rsync over other tools is speed and bandwidth requirements. First time rsync copies entire contents of the directory provided and increments changes over next sync times. Command syntax: $ rsync options source destination 1. Synchronising local directories: $ rsync -zvr /tmp/logs/ /tmp/logs1/ building file list ... done created directory /tmp/ logs1 ./ log. log sent 98 bytes received 48 bytes 292.00 bytes/sec total size is 0 speedup is 0.00 $ Used rsync command options here: -z is for compression -v is for verbose output -r is for recursive directory scanning By default rsync does not preserve timestamps.  2. Preserve timestamps and permissions during sync: $ rsync -azvr /tmp/logs/ /tmp/...

Often forgetting this: sudo easy_install -U pip

I want to sugest power saving changes after installing and handling creation of Time Capsule for Time Machine for my home network ( form my previous article ). I like when it's quiet. And like when disks does not spin, when it's not necessary to do so. So if you usually backup once in some hours and main time (Night and a part of the day) you do not touch a Time Machine... You would probably want to slow down your disks for that time. Fortunately Linux does it very well. And support of it is encoded into Linux core (kernel). You just would need a UI for this possibilities and a bit of knowledge and luck ;) Warning: Operations described farther may be potentially hazardous to your hardware. So now after you are warned ;) let's continue. I guess I will not touch those hazardous functions, but you may, typing wrong letters to this command in Linux shell... So be careful. Better read manuals for farther commands and so on... Anyway what we need is a UI. And...

The real article name might be something like:  Configuring Raspbery Pi to serve like a Time Capsule with Netatalk 3.0 for Mountain Lion.  But it's too long ;) Here I will describe the process of using Raspberry Pi like a Time Machine in my network. To be able to backup your MAC's remotely (Like it would be NAS of some kind). It assumes you have a Raspberry Pi and have installed a Raspbian there and have a ssh connection, or somehow having access to it's console. Refer to my previous article for details . Now that we have a Pi that is ready for action let's animate it. So to make it suit you as a Time Capsule (NAS) for your MAC's you need to do those basic steps: - connect and configure USB hard drive(s) - install support of HFS+ filesystem to be able to use MAC's native filesystem - make mount (auto-mount on boot) of your hard drive - install Avahi and Netatalk demons - configure Netatalk daemon to make it all serve as a Time Machine - configure ...

I've decided to create a post with several recipes for commands I need to use daily. I use them from a Mac OS X Lion default console, except for some mac ports installed... Remote is special linux distribution. How do I Compress a Whole Linux or UNIX Directory?  You need to use tar command as follows (syntax of tar command): tar -zcvf archive-name.tar.gz directory-name Where, -z: Compress archive using gzip program -c: Create archive -v: Verbose i.e display progress while creating archive -f: Archive File name For example, you have directory called /home/garmoncheg/data and you would like to compress this directory then you can type tar command as follows: $ tar - zcvf data . tar . gz / home / garmoncheg / data / Above command will create an archive file called data.tar.gz in current directory. If you wish to restore your archive then you need to use following command (it will extract all files in current directory): $ tar - zxvf data . tar . gz Whe...