1THE MISSING CODE LIBRARY
One of Unix’s greatest strengths is that it lets you create new commands by combining old ones in novel ways. But even though Unix includes hundreds of commands and there are thousands of ways to combine them, you will still encounter situations where nothing does the job quite right. This chapter focuses on the stepping stones that allow you to create smarter and more sophisticated programs within the world of shell scripting.
There’s also something we should address up front: the shell script programming environment isn’t as sophisticated as a real programming environment. Perl, Python, Ruby, and even C have structures ...
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