752 Part VI . Programming (Web hosting mysql) in Linux The
752 Part VI . Programming in Linux The search and reverse-search commands are especially helpful in large source files that have dozens or hundreds of lines. One common use of the reverse-search command is to find the file and/or line in which a variable is first used or in which it is defined. The search command similarly enables you to locate with relative ease each location in which a program symbol (variable, macro, or function) is used, perhaps to find the use that changes a variable unexpectedly or the place where a function is called when it shouldn t be. Summary This chapter took you on a whirlwind tour of a few of the most common programs and utilities used by Linux programmers. You learned how to use GCC to compile programs, how to use make to automate compiling programs, and how to find information about programming libraries using programs like ldd, nm, and ldconfig. You also learned enough about the source code control systems RCS and CVS to be comfortable with the terminology and how to use their most basic features. Finally, you learned how to use the GNU debugger GDB to figure out why, or at least where, a program fails. . . .
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