Very little. C is a very common language to write operating systems in.
C is the basis of Unix, upon which Linux is at least in part based.
Linux supports any written language: it understands Unicode natively, so it can display the characters of any language with the appropriate locales included. As far as programming languages, Linux is written in C, but almost any language, from assembly to C to C++ to Python to Perl to .NET can be used on it.
There is very little difference in the C compiler between Unix and Linux; in some cases (the gcc compiler) it is the same. The differences come in when using system calls; some system calls do not exist in Unix or Linux, although most do. The program I work on compiles the same way (for the most part) between all commercial versions of Unix and several variants of Linux. In other words, the code is fairly portable across platforms.
Writing programs in it. Some of them are: linux, windows, bash, Oracle, MySql, Apache
To program in linux, you just have to pick out a programming language, and use your favorite text editor or IDE to start programming. Most prodominantly, programs are written in C or C++ and can be compiled with the Gnu C Compiler (gcc) or g++ if your program is in an interpreted language, such as perl or python, you just have to make sure you have the interpreter installed.
Linux is a platform, and as such supports a myriad of programming languages. Of these languages C, C++, Java, Python and Perl are very popular, but there are many other programming languages. Some, like Python and Perl are 'interpretive' and similar in this respect to 'BASIC'. C and C++ are compiled, and Java sits somewhere between them.
Linux supports any written language: it understands Unicode natively, so it can display the characters of any language with the appropriate locales included. As far as programming languages, Linux is written in C, but almost any language, from assembly to C to C++ to Python to Perl to .NET can be used on it.
c
Most programs in Linux are written using C or C++.
C is a programming language. A shell is an interface.
C isn't a program, or something you install; it is a programming language for writing software. Linux and most of the programs that run on it were written in C, and a C compiler and libraries are supplied with most systems, or are readily available.
It's 1405 in my Linux box.
There is very little difference in the C compiler between Unix and Linux; in some cases (the gcc compiler) it is the same. The differences come in when using system calls; some system calls do not exist in Unix or Linux, although most do. The program I work on compiles the same way (for the most part) between all commercial versions of Unix and several variants of Linux. In other words, the code is fairly portable across platforms.
Linus Torvalds wrote the Linux kernel in C. Other components written by other contributors for other distributions may be in C or C++.
There are many operating systems developed in C, the most notable of which is Linux.
C, C++ and scripts in Bash, Perl and Python
C with a small smattering of assembler for the boot loader and some architecture-specific optimisations.
Writing programs in it. Some of them are: linux, windows, bash, Oracle, MySql, Apache