Unix on ZK Punk

WC implementation in Go Lang

Mon, 11 Mar 2019 00:21:00 -0800

Continuing the theme of exploring Go Lang, today I will be writing a simple version of the Unix utility wc that displays the number of lines, words, and bytes contained in each input file.

This exploration process will involve the following pieces

Getting a file name from command line. os
Opening the file for reading. os
Reading the contents of the file. bufio
Count the lines, words and bytes. unicode
Display the results.

1. Read filename from the commandline Link to heading

Any arguments typed after the programs named are passed into the os.Args array with the name of the program accessible at the first index.

Exploring filesystem in golang

Wed, 06 Mar 2019 00:12:00 -0800

I am currently dabbling in [GoLang] go-lang and trying to get familiar with it’s syntax and style of programming. I also want to get familiar with the built-in packages for basic tasks witout having to google for basic features.

In this post I will be working my way up to building a simple program that can list the files of a given path to it as a command line argument.

1. Print to console Link to heading

Lets start with a simple program that can print a statement to the console using the "fmt" package and the "Println()" fucntion.

ls implementation in python3

Thu, 28 Feb 2019 00:08:00 -0800

“ls” is unix utility that lists the files and directories in the current path or a user passed path. In this post we will explore how to achive such a basic implementation if it using python. Lets explore the ls command line utility.

Some basic information Link to heading

First, we execute ls command line utility to get some preliminary information of a directory. Here is an example of the output from the ls command on a sample directory.