What exactly do you mean by a 'read operation'; the question is missing the semantics of what you want to accomplish.
The operation and maintenance of a Unix system.
To create a Free OS like the UNIX Operating System, They wanted to create a system that was like UNIX without all of the intellectual property issues that UNIX had. (UNIX was proprietary software).
using touch command of UNIX. syntax touch <filename> will create dummy regular file.
GNU/Linux, and the BSD descendants follow design and operation principles largely similar to UNIX.
There is no the system file. There are many files necessary to create a working Unix system.
You can read the files from Unix school by download the program to a word format. Also, you can use Adobe reader as well to read the material.
Use useradd command
DOS UNIX WINDOWS MACINTOSH LINUX MacOSx
yes they do
cat file name
You can open any read-only file in Unix assuming that you have the read permission. Any utility or program that can get access to that file in read mode can open it, which would include programs such as 'more', 'less', 'vi', 'cat', etc. Read-only merely means you can't change it; but you could copy it or look at it.
In UNIX: use function chmod