Linux and Unix and their variants have several different ways of locating files. each of the below commands can be used to locate files.findlocatewheriswhich
The C header files are in the same place as other Unix and Unix-like systems: /usr/include if you installed the compiler.
There is no the system file. There are many files necessary to create a working Unix system.
For Unix systems that are only talking to other Unix systems NFS (Network File System) is the most popular. If you want to share Unix files with Windows systems, then Samba is one of the most popular ways to accomplish this.
Unix files do not rely on extensions, therefore there is no command to find them.
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.
Files in unix operating systems with a '.' character as the first character in the filename are hidden.
Depends on what you mean by a "gnu" file, since utilities are common across Unix platforms including HPUX. Need more information.
Unix files can be easily transferred to windows via a network connection either by using FTP or by using Samba. Samba allows a Unix file system to be mounted/shared on a Windows system to look like a windows directory.
/etc/hosts
Back up the files to another disk change the os and restore the files.
Text files, mainly. The name of the files usually ends with .C and .H (lowercase in unix).