Coreutils- Doha Elsawy

[dohaelsawy]

CoreUtils in Go

Description

Goal is to reimplement several core Unix utilities. giving exposure to Go basics, including file I/O, flag parsing, string manipulation, and more.

Requirements

Create Go programs that replicate the functionality of the following Unix utilities:

• [x] head

• [x] tail

• [x] wc (word count)

• [x] cat

• [x] echo

• [x] tree

• Each utility should be implemented as a separate Go program.

• Programs should read input from files or stdin as appropriate.

• Implement basic flags for each utility where applicable.

Example Implementations

• 1. head Print the first 10 lines of input by default. Add a -n flag to specify the number of lines to print.
• 2. tail Print the last 10 lines of input by default. Add a -n flag to specify the number of lines to print.
• 3. wc (word count) Count lines, words, and characters in the input. Add -l, -w, and -c flags to display only lines, words, or characters respectively.
• 4. cat Concatenate and print files. Add a -n flag to number output lines.
• 5. echo Print arguments to standard output. Add a -n flag to omit the trailing newline.

     Acceptance Criteria

• Each utility is implemented as a separate Go program.
• Includes basic error handling.
• Includes a README with build and usage instructions for all utilities.

  Resources

• https://go.dev/play/
• https://gobyexample.com/
• Go documentation: https://golang.org/doc/
• Man pages : https://man7.org/linux/man-pages/dir_section_1.html (just man COMMAND)
• https://cheat.sh/ for quick snippets on how to use each command