Unix file system : Devices

/dev/rp00 and /dev/rp01 are named after the DEC RP06 disc drive attached to the system. We cannot make a link to a file in another subsystem. One reason is that the inode numbers are not unique in different file systems.
$ df
$ tty
$ mesg n
$ mesg y

The ‘df’ command tells the available space in the mounted file subsystem. The ‘tty’ command tells which terminal we are using. So we can send files and informations to that terminal and it appears in the corresponding terminal. ‘mesg n’ turn off the messages. /dev/tty is a synonym for our terminal.

If we want to run a program and its output files are not importent we can redirect it to ‘/dev/null’ causes its output to be thrown away.


Author: Abhilash

I'm Abhilash, a web developer who specializes in Ruby development. With years of experience working with various frameworks like Rails, Angular, Sinatra, Laravel, NodeJS, React and more, I am passionate about building robust and scalable web applications. Since 2010, I have been honing my skills and expertise in the Ruby on Rails platform. This blog is dedicated to sharing my knowledge and experience on topics related to Ruby, Ruby on Rails, and other subjects that I have worked with throughout my career. Join me on this journey to explore the exciting world of web development!

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