In the preceding syntax, program is an awk program that you include on the command line. The program-file is the name of the file that holds an awk program. Putting the program on the command line allows you to write short awk programs without having to create a separate program-file. To prevent the shell from interpreting the awk commands as shell commands, enclose the program within single quotation marks. Putting a long or complex program in a file can reduce errors and retyping.

The file-list contains pathnames of the ordinary files that awk processes. These files are the input files. When you do not specify a file-list, awk takes input from standard input or as specified by getline (page 634).

A Practical Guide to UNIX[r] for Mac OS[r] X Users
A Practical Guide to UNIX for Mac OS X Users
ISBN: 0131863339
EAN: 2147483647
Year: 2005
Pages: 234

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