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8.3. Summary

In this chapter, we learned how to provide user comments and how to prompt for user input. This is usually done using the echo/read combination. We also discussed how files can be used as input and output using file descriptors and redirection, and how this can be combined with getting input from the user.

We stressed the importance of providing ample message for the users of our scripts. As always when others use your scripts, it is better to give too much information than not enough. Here documents is a type of shell construct that allows creation of lists, holding choices for the users. This construct can also be used to execute otherwise interactive tasks in the background, without intervention.

 
 
  Published under the terms of the GNU General Public License Design by Interspire