It initializes an interactive shell session. bashrc is a shell script that Bash runs whenever it is started interactively. When bash is invoked as an interactive login shell it first reads and executes commands from ~/.bash_profile. Like all Unix shells, it supports filename globbing (wildcard matching), piping, here documents, command substitution, variables, and control structures for condition-testing and iteration.īash_profile is a configuration file for bash shell. Bash can also read and execute commands from a file, called a script. Once installed, a basic C file, like the one shown on our C language overview, can be compiled by running the below command.īash is a command processor that typically runs in a text window, where the user types commands that cause actions. Short for GNU Compiler Collection, GCC is a collection of programming compilers including C, C++, Objective-C, Fortran, Java, and Ada. It consists of the macOS SDK and command-line tools such as Clang, which are installed in the /Library/Developer/CommandLineTools directory.

The Command Line Tools Package is a small self-contained package available for download separately from Xcode and that allows you to do command line development in macOS.

Install xcode command line tools