Run Unix Commands to DOS equivalent in C Language

Question

In Operating System concept i want to write a C program to make Unix command works as DOS commands. It Means when ever i press Unix Command like ls -which is used for Display list of Files- it works like Dir command in DOS.Could you please help me out with this?

Most shells have the ls command built-in, and it often contain many options to control its output. So what you should do is create a shell alias to add the options you want for the format you want. — Some programmer dude
– Some programmer dude, Commented Mar 27, 2015 at 9:48
ls -l | awk '{printf "%s %s %s %20d %s\n", $6, $7, $8, $5, $9}' — pmg
– pmg, Commented Mar 27, 2015 at 10:04
You can study source code of the win-bash - "A stand-alone bash for Windows" or Cygwin - "Get that Linux feeling - on Windows" projects. They do what you want to build, but in a more complete and more complicated way than "practice and write a c program to do so". Studying similar/competitor's source code is good way to find out how to implement things — xmojmr
– xmojmr, Commented Mar 27, 2015 at 12:57

Community · Accepted Answer · 2017-05-23 12:03:07Z

2

Starting with the ls command as example, take input from user for the command. If the command is ls call a windows function that will display the content of the current working directory(). For ls,

you need to get first the current working directory. GetCurrentDir() for windows will be your first step. This will help How do I get the directory that a program is running from?
Then you can list the files in directory like this https://msdn.microsoft.com/en-us/library/windows/desktop/aa365200(v=vs.85).aspx. But you do need the output of first step.

Other commands can also be implemented like this

edited May 23, 2017 at 12:03

CommunityBot

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answered Mar 27, 2015 at 9:54

Yasir Majeed

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4 Comments

alk Over a year ago

Are you sure the OP want to create the program under windows?

EniGma Over a year ago

No alk, I just want to practice and write a c program to do so, if i can!!!.and i would appreciate to help me out with this.thanks

Yasir Majeed Over a year ago

Look at the title, Run unix commands to DOS. Then it must be in windows

EniGma Over a year ago

sorry, yes it is in windows :(

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