Can’t run C program: “a.out: command not found”

When you type a command name (a.out is no different from any other command name in this respect), the shell searches for an executable file with that name. It performs this search using a list of directory names stored in your $PATH environment variable. You can see your current $PATH by typing at your shell prompt. A typical value might … Read more

List of ANSI color escape sequences

The ANSI escape sequences you’re looking for are the Select Graphic Rendition subset. All of these have the form where XXX is a series of semicolon-separated parameters. To say, make text red, bold, and underlined (we’ll discuss many other options below) in C you might write: In C++ you’d use In Python3 you’d use and in Bash … Read more