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Like grep , sed , and awk , the shell has metacharacters. At first glance, they may look the same, but they don't always represent the same characters when the shell evaluates them. Metacharacters, as we discussed in "Metacharacters" on page 83 of Chapter 4, are special char acters used to represent something other than themselves . Shell metacharacters are often called wildcards . Table 7.1 lists the Bourne shell metacharacters and what they do. Table 7.1. Bourne Shell Metacharacters
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