If you are asking about all commands (which are in fact, files) then the best way to learn how to use them is to use them frequently. Learning about "all" commands is not possible because new ones are created all the time, and it isn't necessary to learn all of them.
Usually all it takes is a subset of what you need to use on a day to day basis.
It would take a very long time to learn all of the Unix commands, and frankly, that isn't necessary. Most Unix users have a subset of commands they use all the time, and that is how they learn them.
Recursively removes all files from the directory and all under it.
Try the following: ls *[a-z]
The C header files are in the same place as other Unix and Unix-like systems: /usr/include if you installed the compiler.
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
Yes, in Linux or Unix, this command will show all files including hidden files in the current directoryl. In general, hidden files are files whose name begins with a period "."
There is no the system file. There are many files necessary to create a working Unix system.
You will need to be more clear about the target - is 'oracle' a directory?
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.
It's where all settings, documents, private files, etc. are located.
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.