SAMS Teach Yourself Red Hat® Fedora™ 4 Linux® All in One

Summary

In this chapter, you learned to harness the power of the Linux shell to create your own powerful, functional commands in just a few minutes using shell scripting. Specific topics you learned about in this chapter include

• Creating, assigning values to, and substituting variables

• Using the different types of quoting for variable and command substitution

• Using the PATH environment variable as it applies to commands and shell scripts

• Assigning execute permissions to your script and moving it to a directory listed in PATH so that it can be easily called

• Using the if..then conditional statement structure

• Using the while..do conditional statement structure

• Using the for..do conditional statement structure

After you've spent some time practicing the ...