command

yup.cat

A pure Go implementation of the cat command that adheres to the yup.sh Command interface.

Features

• Concatenate and display files
• Number output lines
• Show line endings
• Show tab characters
• Squeeze multiple blank lines
• Strongly typed flag system

Usage

import "github.com/yupsh/yup.cat"

// Basic usage
cmd := cat.Cat("file1.txt", "file2.txt")

// With flags
cmd := cat.Cat("file.txt", cat.NumberLines{}, cat.ShowEnds{})

// Execute
err := cmd.Execute(ctx, input, output, stderr)

Flags

• NumberLines{} - Number all output lines (-n)
• ShowEnds{} - Display $ at end of each line (-E)
• ShowTabs{} - Display TAB characters as ^I (-T)
• SqueezeBlank{} - Suppress repeated empty output lines (-s)