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ostep-projects/initial-utilities
2018-01-16 10:29:40 -06:00
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Unix Utilities

In this project, you'll build a few different UNIX utilities, simple versions of commonly used commands like cat, ls, etc. We'll call each of them a slightly different name to avoid confusion; for example, instead of cat, you'll be implementing my-cat.

Objectives:

  • Re-familiarize yourself with the C programming language
  • Learn a little about how UNIX utilities are implemented
  • Learn (as a side effect) how to use a proper code editor such as emacs

my-cat

The program my-cat is a simple program. Generally, it reads a file as specified by the user and prints its contents. A typical usage is as follows:

my-cat main.c

In this case, my-cat will read the file main.c and print out its contents.

You'll need to learn how to use a few library routines from the C library to implement the source code for this program, which we'll assume is in a file called my-cat.c.

my-grep

my-zip and my-unzip

my-sort

my-uniq