I am using Ubuntu 14.04 install ionic framework but i cant create sample project in my pc and cannot create todo directory i fallow below commands

$ sudo apt-get install nodejs 
$ sudo apt-get install npm
$ sudo npm install -g cordova
$ sudo npm install -g ionic

successfully done above commands but then I type

$ ionic start todo blank

but cannot notice anything after that I type

$ cd todo && ls 

command, I notice that

bash: cd: todo: No such file or directory

What you would need to check is that your ionic start command runs successfully. Most probably you are in a directory, where you don't have the permission to create the directory etc.