Chapter 24. Writing Your First Script
In the preceding chapters, we have assembled an arsenal of command-line tools. While these tools can solve many kinds of computing problems, we are still limited to manually using them one by one on the command line. Wouldn’t it be great if we could get the shell to do more of the work? We can. By joining our tools together into programs of our own design, the shell can carry out complex sequences of tasks all by itself. We enable it to do this by writing shell scripts.
What Are Shell Scripts?
In the simplest terms, a shell script is a file containing a series of commands. The shell reads this file and carries out the commands as though they have been entered directly on the command line.
The shell is distinctive, ...