Читать книгу Linux Bible - Christopher Negus - Страница 195

Have you ever had a task that you needed to do over and over that took lots of typing on the command line? Do you ever think to yourself, “Wow, I wish I could just type one command to do all this”? Maybe a shell script is what you're after.

Shell scripts are the equivalent of batch files in Windows and can contain long lists of commands, complex flow control, arithmetic evaluations, user-defined variables, user-defined functions, and sophisticated condition testing. Shell scripts are capable of handling everything from simple one-line commands to something as complex as starting up a Linux system. Although dozens of different shells are available in Linux, the default shell for most Linux systems is called bash, the Bourne Again SHell.