ccwc-go

ccwc is a clone of the popular wc unix command line utility written in Go using the Go stdlib.

The core features are:

• returns the bytes, lines, words, or characters in a file or stdin
• Accepts input from stdin via the pipe operator (|) or a file path
• provides flexible output based on simple flags
• default return (no flags) is: lines words bytes filename
• if no filename is specified the input defaults to stdin
• *FYI: go must be installed on the host to use this utility

🚧 Next Steps

• Some code runs when it is not needed, which is inefficient. For example, we count lines when the user only requests the character count to be returned. This should be corrected with conditional logic.
• We could improve readability and maintainability by moving the core functionality outside the main(). Breaking the logic into a small number of functions would also make it easy to implement tests for these functions instead of simply testing the main().

Installation

Step 0: Clone the repo

git clone https://github.com/ogorman89/ccwc-go.git
cd ccwc-go

Step 1: Build the binary for your environment

go build -o ccwc main.go`

Step 2: Move the binary into your GOPATH (for global installation)

sudo mv ccwc /Users/usr/go/bin`

*your bin may be in a different location, if you need to find your gopath type $GOPATH in your terminal

Using ccwc

You can now use ccwc via the command line!

run on a specific file

ccwc test.txt

>>> 7145 58164 342190 test.txt

run on stdin via pipe operator

echo "test one two three" | ccwc

>>> 1 4 19

or

cat test.txt | ccwc

>>> 7145 58164 342190

Optional flags

Flag	Description
-c	# bytes
-l	# lines
-w	# words
-m	# characters
no	defaults to l w c

Examples:

cat test.txt | ccwc -l

>>> 7145

ccwc -c test.txt

>>> 342190 test.txt