Making you SD card work with your Ubuntu / Linux Laptop or Desktop

You insert you SD card in your Ubuntu PC and it simply does not work. Most probably your kernel has not loaded module required for recognizing your SD card.

You must run all commands in this post as root.
[Optional] : To run commands as root run command "sudo su root" and to switch user as root.

First check if your PC detects the SD Card controller.
For that run command
lspci | grep -i sd

  root@ubuntu:~# lspci | grep -i sd   
  23:00.1 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30)   
  23:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30)   

As you can see above, my PC recognised JMicron SD Card controller.

To make your OS load module for SD Card controller, simply run these commands.

  root@ubuntu:~# echo tifm_sd >> /etc/modules   
 root@ubuntu:~# echo mmc_block >> /etc/modules   

And then reboot. Your OS should recognise your SD card.

Solving basics hell out of vsftpd

Configuring vsftpd isn't a very hard thing. If you haven't read the docs, then its crucial to go.

I had a fresh installation of vsftpd on CentOS 6.2

I tweaked hardly one or two params in /etc/vsftpd/vsftpd.conf such as "anonymous_enable=NO"

Then created a new user using:

 #useradd -m -d /home/user1 -s /bin/bash user1  

Then I tried to connect to the server using our brand new user1.
Here's what I got:
500 OOPS: cannot change directory :/home/user1

After a bit digging on Google and thanks to this link, I was able to do it when I ran following command:

 /usr/sbin/setsebool -P ftp_home_dir 1  

This command takes a while to run, but it worked for me after that.
The setsebool sets boolean variables in SELinux.

Quick Configure Subversion on Ubuntu 11.10 oneiric

Subversion is quiet good version control system, used by many developers across the world and is awesome!
I searched throughout Google to find a simple guide to deploy a least working subversion just to see it and was unable to.

(Note: use sudo whenever required.)
To install and get a simple up and running subversion on Ubuntu:
First install subversion packages

sudo apt-get install subversion libapache2-svn

After packages got installed, you need to create repositories.
To create a repository, I used my home directory.

mkdir /home/kaustubh/project1

Then create a repository

sudo svnadmin create /home/kaustubh/project1

Then open repository/conf/svnserve.conf (/home/kaustubh/project1/conf/svnserve.conf in my case) in your favorite text editor.
uncomment following parameters in the file. (Note: There should be no spaces before or after any parameter line. The svnserve will then be unable to read the config.) Most commonly made mistake.

auth-access = write
password-db = passwd

Then open repository/conf/passwd (/home/kaustubh/project1/conf/passwd in my case) in your favorite text editor.
Add lines below everything in following format

username = password

Its time to fire up the server
Enter following to start the server and after its started, use ctrl+c to kill the server.

svnserve -d --foreground -r /home/kaustubh

Here, -d means demon mode, --foreground means it will run in foreground, -r specifies path to repository.

Now you can easily connect to your repository using

svn://servername/project1

You will have to enter username and password mentiond in your repo/conf/passwd file.