Linux Command Output Redirection Rules

Here's another thing that I learned today -- command output redirection syntax.

> redirects the program's output to the specified file which is specified afterwards. If > is preceded by ampersand, shell redirects all outputs (error and normal) to the file right of >. If you don't specify ampersand, then only normal output is redirected.

In other words:

command &>  file # redirect error and standard output to file
command >   file # redirect standard output to file
command 2>  file # redirect error output to file

This is how things work on Ubuntu and bash. Other shells could very well be different.