https://github.com/iang/go-uniq

A slimmed down version of the *nix uniq tool written in go
https://github.com/iang/go-uniq

Last synced: 2 days ago
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A slimmed down version of the *nix uniq tool written in go

• Host: GitHub
• URL: https://github.com/iang/go-uniq
• Owner: IanG
• Created: 2024-07-23T11:06:18.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-07-23T11:42:52.000Z (6 months ago)
• Last Synced: 2024-11-30T11:08:47.478Z (2 months ago)
• Language: Go
• Homepage:
• Size: 4.88 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# go-uniq

This is a solution to [John Crickett](https://www.linkedin.com/in/johncrickett/)'s Coding Challenges [Build Your Own uniq Tool](https://codingchallenges.fyi/challenges/challenge-uniq) in go.

This is a very basic implementation of the `uniq` command used in the shell on most *nix-like operating systems.

It makes use of the `flags` go package for handling command line parameters

## Building Locally

build the code with:

`go build`

this will create the `uniq` binary in your local directory.

## Running

### Getting Help

View command line options with `./uniq -h`.  This will output:

```

Usage: ./uniq [OPTIONS] [inputfile] [outputfile]

  -c	Count occurrences

  -count

    	Count occurrences

  -d	Print only repeated lines

  -repeated

    	Print only repeated lines

  -u	Print only unique lines

  -unique

    	Print only unique lines

  [inputfile] can either be the path to an input file or '-' for stdin

  [outputfile] can either be the path to an output file or '-' for stdout

```

### Finding the unique lines in a file

You can find the unique lines in a file with:

`./uniq ./testdata/test.txt`

This will output:

```

line1

line2

line3

line4

```

You can also pipe input from stdin instead of specifying the filename with:

`cat ./testdata/test.txt | ./uniq -`

### Finding the repeated lines in a file

You can find the repeated lines in a file with:

`./uniq -d ./testdata/test.txt`

This will output:

```

line2

```

You can find out how many times repeated lines occur in the file with:

`./uniq -d -c ./testdata/test.txt`

This will output:

```

2 line2

```