vi stop making undo files

.un~ files are undo files generated by vi.

in .vimrc you can write following line to avoid making these files

set noundofile

To avoid making backup and swap files, write following lines

set nobackup
set nowritebackup
set noswapfile 
set noundofile 

How to install skype on ubuntu ?

sudo dpkg --add-architecture i386

sudo add-apt-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner"

sudo apt-get update && sudo apt-get install skype 

How to check tomcat logs on linux ?

tail -10 /var/log/tomcat7/catalina.out

Set vi as editor for git commands

Set vi as editor for git

- git config --global core.editor "vi"
- or in bashrc export environment variable
  export GIT_EDITOR=vi