Basics of the MKS Toolkit - Mks.com

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Programming A number of record-keeping commands are also helpful. For example, suppose you have a program that is split into several source files. For the sake of simplicity, we'll assume that the source files all have a .c extension and are all stored in the src directory. You will often want to find out which source files refer to a particular variable or function. You can do this simply with fgrep 'name' src/*.c This command checks all the appropriate files and displays lines that contain the given name. Each line is labelled with the name of the file where the line was found. This offers a quick way to find the use of a function or data object in source files. As another example of using record-keeping commands, suppose that you are working on a large program and every few days you save all the source code for the program on a floppy disk (as a safety precaution). There are often times when you want to compare the current versions of your source files to one of the saved versions, to find out what changes have been made between the two. diff oldfile newfile prints out all the differences between two versions of a file, making comparisons easy. The sum command gives a checksum for each file. If applied to two versions of what was at one time the same file, sum offers a convenient way to tell if the files are still the same. It does not, however, indicate what the differences are. The find, head, and tail commands also have obvious applications to programming. For example, suppose you are looking for a particular Basic source program but can't remember where it is stored on your disk. find / -name '*.bas' searches all the directories on your current device and displays the names of all files with the .bas extension. 28 MKS Toolkit
Timing Programs Timing Programs The time command built into the MKS KornShell lets you time programs to find out how much processor time they actually require. You might use this to compare two versions of a program to see if one runs faster than the other. From a MKS KornShell prompt, you can run a program with time command-line Creating Symbol Tables where command-line is a command line that invokes the program you want to time. time runs the program, then displays: the total time taken by the program; the time spent in the operating system (using system service calls); the time spent in the user program's own code. A number of MKS Toolkit commands work with executable files that contain their own symbol tables. The symbol table format may be the one used by the Codeview Symbols of Microsoft C. Of course, many popular compilers and/or linkers do not use this format. In particular, versions of the Microsoft link command do not even store symbol tables in the executable file. Instead, link prepares a (text) file describing the symbol table (provided that you specify an option asking for such a file). By default, the file extension of this `symbol table file' is .map. Codeview symbol tables can be removed from an executable file with the Toolkit's strip command, as in strip file.exe Basics of the MKS Toolkit 29
Page 1 and 2: MKS Toolkit Basics of the MKS Toolk
Page 3 and 4: Technical Support To request custom
Page 5 and 6: Table of Contents 1 Introduction...
Page 7 and 8: Introduction 1 In this chapter, we
Page 9 and 10: General Purpose Tools For informati
Page 11 and 12: m mv Disk Usage to copy a list of f
Page 13 and 14: Options Options pg displays the con
Page 15 and 16: Redirection Redirection where comma
Page 17 and 18: Wild Card Characters Unlike standar
Page 19 and 20: Text Processing Editors The vi Scre
Page 21 and 22: Columnation Document Size Other Wor
Page 23 and 24: Record-Keeping 4 Record-keeping is
Page 25 and 26: Sorting Records By default, sort so
Page 27 and 28: Creating Sub-Lists Patterns Creatin
Page 29 and 30: For further information, see the re
Page 31 and 32: Checking Whole Directories Other Si
Page 33: Programming Editing and Record Keep
Page 37 and 38: Index B banner 14 C c 15 cat 6, 10
Page 39: Special characters in patterns 21 s

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