https://github.com/codelixir/syscalls

Using system calls in C code to read/write to files/stdout/stderr. For OSN course, Monsoon 2021.
https://github.com/codelixir/syscalls

c system-calls

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Using system calls in C code to read/write to files/stdout/stderr. For OSN course, Monsoon 2021.

• Host: GitHub
• URL: https://github.com/codelixir/syscalls
• Owner: codelixir
• Created: 2021-08-27T10:29:48.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2021-10-12T07:15:19.000Z (about 3 years ago)
• Last Synced: 2024-04-17T11:18:33.075Z (7 months ago)
• Topics: c, system-calls
• Language: C
• Homepage:
• Size: 79.1 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
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# System Calls

The problem statements are given in [Assignment.pdf](Assignment.pdf).

Some sample files are given in `sample` directory with [`test.txt`](sample/test.txt) as the input. The outputs are generated using:

```bash

$ gcc q1.c

$ ./a.out test.txt

```

```bash

$ gcc q2.c

$ ./a.out test.txt 6 3

```

```bash

$ gcc q1.c

$ ./a.out test.txt > 3.txt

```

## Assumptions and Remarks

### Question 1

* In case of missing arguments, program exits. In case of additional arguments, program continues by ignoring extra arguments. In both cases, error messages are output to the terminal.

* If the directory `Assignment/` already exists, permissions aren't being overridden because the assignment mentioned to use the existing directory. Same for files; content is being overridden, permissions aren't.

### Question 2

* Same as question 1

* Last 2 arguments are single digit positive integers. (Throws error for non-integers and negative integers).

* The file is exactly divisible into the input number of parts

### Question 3

* Same as Q1 Point 1

* `Assignment/` directory, if exists, is present inside the working directory.

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*These codes were written as a part of the Operating Systems and Networks course, Monsoon 2021.*