what is orange colored files in dev directory?

Question

i looked up in whole root directory but i didn't understand one thing what does orange color in dev directory mean? i know its directory for system devices but i didn't understand the c in ls -l permission section and what type of file is that? this data file is that used by HAL to read and recognize system devices? this is the screenshot of terminal

Answer 1

The explanation is found on Stack Overflow.

Not just for Ubuntu but for all distros (as far as I understand) that its a character special file. I have linked the source or the information from stack overflow below.

https://stackoverflow.com/a/23236028/879882

It's a character-based (as opposed to block-based) device file.

Blocked-based devices are anything where it makes sense to transfer data in (surprisingly enough) blocks. By that, I mean things like disks.

Character-based devices (and again, this should come as no surprise) tend to transfer characters at a time. Things like terminals, serial ports, printers and so on.

If you're running a decent Linux distro, that information (plus more than you could probably ever need) can be obtained with the command:

info ls
which contains this little snippet:

The file type is one of the following characters:
    -  regular file
    b  block special file
    c  character special file
    C  high performance ("contiguous data") file
    d  directory
    D  door (Solaris 2.5 and up)
    l  symbolic link
    M  off-line ("migrated") file (Cray DMF)
    n  network special file (HP-UX)
    p  FIFO (named pipe)
    P  port (Solaris 10 and up)
    s  socket
    ?  some other file type

Also if you man ls from a command line will bring up the text manual for ls with more details or Google man ls for a webpage version.