chore: cleanup — untrack binaries, consolidate Go dirs, dedupe tools

- Untrack and delete compiled binaries (tarsum, gosoft.exe, rust uniq/uniq2);
  ignore build outputs (dist/, bin/, *.exe, *.test, .ruff_cache/)
- Merge tools/go/ and projects/go-tools/go/ into projects/go-tools/<name>/
- Fix goipgrep .gitignore: bare 'ipgrep' pattern was ignoring cmd/ipgrep/,
  so the main entrypoint was never tracked; now anchored to /ipgrep
- Archive duplicate implementations to archive/experimental/{rust,go}/
  (uniq, between, tarsum rewrites); canonical versions stay in tools/
- Update README tool catalog to match new layout

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

archive/experimental/go/gobetween/gobetween.go

@@ -0,0 +1,140 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+func printUsage() {
+	fmt.Fprintf(os.Stderr, "Usage: %s [options] <range specification> [file]\n", os.Args[0])
+	fmt.Fprintln(os.Stderr, "Options:")
+	flag.PrintDefaults()
+	fmt.Fprintln(os.Stderr, "\nRange specification examples:")
+	fmt.Fprintln(os.Stderr, "10,20      Reads lines 10 to 20 from the input")
+	fmt.Fprintln(os.Stderr, "15:+5      Reads 5 lines starting from line 15")
+	fmt.Fprintln(os.Stderr, "3          Reads from line 3 to the end of the file")
+	fmt.Fprintln(os.Stderr, "+2         Reads the first 2 lines")
+	fmt.Fprintln(os.Stderr, "Please ensure you input valid range specifications and file paths.")
+	os.Exit(1)
+}
+
+func parseArgs(args []string) (int, int, string, error) {
+	var filename string
+	var start, length, end int
+	found := false
+
+	// Concatenate all arguments to a single string for easier parsing
+	joinedArgs := strings.Join(args, " ")
+
+	// Regular expression to match ranges and numbers
+	rangeRegex := regexp.MustCompile(`((\d+)?([ :,;-]))(\+)?(\d+)`)
+	range2Regex := regexp.MustCompile(`((\d+)([ :,;-]))`)
+	range3Regex := regexp.MustCompile(`(\+)?(\d+)`)
+
+	matches := rangeRegex.FindStringSubmatch(joinedArgs)
+
+	if matches != nil {
+		//check if start was defined
+		if matches[2] != "" {
+			start, _ = strconv.Atoi(matches[2]) // Convert start line to integer
+		} else {
+			start = 1
+		}
+		if matches[4] == "+" { // Check if it's a relative length
+			length, _ = strconv.Atoi(matches[5]) // Convert length to integer
+			end = start + length - 1
+		} else {
+			end, _ = strconv.Atoi(matches[5]) // Convert end line to integer
+		}
+		// Remove the matched part from the arguments
+		joinedArgs = strings.Replace(joinedArgs, matches[0], "", 1)
+		found = true
+	} else {
+		matches = range2Regex.FindStringSubmatch(joinedArgs)
+		if matches != nil {
+			start, _ = strconv.Atoi(matches[2]) // Convert start line to integer
+			end = -1
+			// Remove the matched part from the arguments
+			joinedArgs = strings.Replace(joinedArgs, matches[0], "", 1)
+			found = true
+		} else {
+			matches = range3Regex.FindStringSubmatch(joinedArgs)
+			if matches != nil {
+				if matches[1] == "+" { // Check if it's a relative length
+					length, _ := strconv.Atoi(matches[2]) // Convert length to integer
+					start = 1
+					end = start + length - 1
+				} else { // Otherwise convert it to an absolute length
+					start, _ = strconv.Atoi(matches[2]) // Convert start line to integer
+					end = -1
+					// Remove the matched part from the arguments
+				}
+				joinedArgs = strings.Replace(joinedArgs, matches[0], "", 1)
+				found = true
+			} else {
+				found = false
+				printUsage()
+			}
+		}
+	}
+
+	// Clean up and identify the filename, if present
+	joinedArgs = strings.TrimSpace(joinedArgs)
+	if joinedArgs != "" && !found {
+		// If we didn't find numbers, interpret the remaining as filename
+		filename = joinedArgs
+	} else if joinedArgs != "" {
+		// Otherwise, interpret any non-empty remaining part as filename
+		filename = joinedArgs
+	}
+
+	if !found {
+		return 0, 0, "", fmt.Errorf("no valid range or line number found")
+	}
+
+	return start, end, filename, nil
+}
+
+func main() {
+	flag.Parse()
+	args := flag.Args()
+
+	if len(args) < 1 {
+		printUsage()
+		os.Exit(1)
+	}
+
+	startIndex, endIndex, filename, err := parseArgs(args)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error parsing arguments: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Detemine the input source (file or stdin)
+	inputSource := os.Stdin
+	if filename != "" {
+		inputSource, err = os.Open(filename)
+		if err != nil {
+			log.Fatalf("Failed to open file: %v\n", err)
+		}
+		defer inputSource.Close()
+	}
+
+	scanner := bufio.NewScanner(inputSource)
+	//print all lines from line buner start to linenumber end unless linenumber end is -1
+	for i := 1; scanner.Scan(); i++ {
+		if startIndex <= i && (i <= endIndex || endIndex == -1) {
+			fmt.Println(scanner.Text())
+		}
+	}
+	if err := scanner.Err(); err != nil {
+		log.Fatal(err)
+	}
+
+}

archive/experimental/go/gouniq/gouniq.go

@@ -0,0 +1,75 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"hash/fnv"
+	"log"
+	"os"
+)
+
+func hashLine(s string) uint32 {
+	hasher := fnv.New32a()
+	hasher.Write([]byte(s))
+	return hasher.Sum32()
+}
+
+func main() {
+	// Define command line flags
+	reverse := flag.Bool("d", false, "Print only lines that appear more than once.")
+	help := flag.Bool("h", false, "Display help and usage information.")
+	flag.Usage = func() {
+		fmt.Fprintf(flag.CommandLine.Output(), "Usage of %s:\n", os.Args[0])
+		fmt.Println("This program reads from a file or standard input, deduplicates lines, and outputs the results.")
+		fmt.Println("Options:")
+		flag.PrintDefaults()
+		fmt.Println("Example usage:")
+		fmt.Println("\t", os.Args[0], "[options] [filename]")
+		fmt.Println("\t", os.Args[0], "-d filename # Only print duplicates")
+		fmt.Println("\t", "cat /some/text/file |", os.Args[0], "# Read from standard input")
+	}
+	flag.Parse()
+
+	// Check for help flag
+	if *help {
+		flag.Usage()
+		os.Exit(0)
+	}
+
+	// Detemine the input source (file or stdin)
+	inputSource := os.Stdin
+	var err error
+	if flag.NArg() > 0 {
+		inputSource, err = os.Open(flag.Args()[0])
+		if err != nil {
+			log.Fatalf("Failed to open file: %v\n", err)
+		}
+		defer inputSource.Close()
+	}
+	seenLines := make(map[uint32]int)
+	scanner := bufio.NewScanner(inputSource)
+
+	//Readin lines
+	for scanner.Scan() {
+		line := scanner.Text()
+		hash := hashLine(line)
+		seenLines[hash]++
+
+		if *reverse {
+			// Print only lines that appear more than once
+			if seenLines[hash] > 1 {
+				fmt.Println(line)
+			}
+		} else {
+			// Normal mode, print only unique lines
+			if seenLines[hash] == 1 {
+				fmt.Println(line)
+			}
+		}
+	}
+	//Check for errors during scanning
+	if err := scanner.Err(); err != nil {
+		log.Fatalf("Failed to read input: %v\n", err)
+	}
+}

archive/experimental/go/tarsum/go.mod

@@ -0,0 +1,13 @@
+module tarsum
+
+go 1.24.4
+
+require (
+	github.com/mitchellh/go-homedir v1.1.0
+	github.com/spf13/cobra v1.9.1
+)
+
+require (
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.6 // indirect
+)

archive/experimental/go/tarsum/go.sum

@@ -0,0 +1,12 @@
+github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
+github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/spf13/cobra v1.9.1 h1:CXSaggrXdbHK9CF+8ywj8Amf7PBRmPCOJugH954Nnlo=
+github.com/spf13/cobra v1.9.1/go.mod h1:nDyEzZ8ogv936Cinf6g1RU9MRY64Ir93oCnqb9wxYW0=
+github.com/spf13/pflag v1.0.6 h1:jFzHGLGAlb3ruxLB8MhbI6A8+AQX/2eW4qeyNZXNp2o=
+github.com/spf13/pflag v1.0.6/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

archive/experimental/go/tarsum/tarsum.go

@@ -0,0 +1,138 @@
+package main
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"hash"
+	"io"
+	"os"
+
+	"github.com/spf13/cobra"
+)
+
+// TarSum represents a tar checksum calculator
+type TarSum struct {
+	hasher hash.Hash
+}
+
+// NewTarSum creates a new TarSum instance
+func NewTarSum() *TarSum {
+	return &TarSum{
+		hasher: sha256.New(),
+	}
+}
+
+// Update updates the hash with data
+func (ts *TarSum) Update(data []byte) {
+	ts.hasher.Write(data)
+}
+
+// Sum returns the final checksum as a hex string
+func (ts *TarSum) Sum() string {
+	return hex.EncodeToString(ts.hasher.Sum(nil))
+}
+
+// CalculateTarSum calculates the checksum of a tar file
+func CalculateTarSum(filePath string) (string, error) {
+	tarSum := NewTarSum()
+
+	file, err := os.Open(filePath)
+	if err != nil {
+		return "", fmt.Errorf("failed to open file: %w", err)
+	}
+	defer file.Close()
+
+	// Read the entire tar file
+	data, err := io.ReadAll(file)
+	if err != nil {
+		return "", fmt.Errorf("failed to read file: %w", err)
+	}
+
+	tarSum.Update(data)
+	return tarSum.Sum(), nil
+}
+
+// CalculateTarSumSorted calculates checksum with sorted entries
+func CalculateTarSumSorted(filePath string) (string, error) {
+	tarSum := NewTarSum()
+
+	file, err := os.Open(filePath)
+	if err != nil {
+		return "", fmt.Errorf("failed to open file: %w", err)
+	}
+	defer file.Close()
+
+	// Read the entire tar file
+	data, err := io.ReadAll(file)
+	if err != nil {
+		return "", fmt.Errorf("failed to read file: %w", err)
+	}
+
+	tarSum.Update(data)
+	return tarSum.Sum(), nil
+}
+
+// CalculateTarSumWithExclusions calculates checksum with excluded paths
+func CalculateTarSumWithExclusions(filePath string, excludes []string) (string, error) {
+	tarSum := NewTarSum()
+
+	file, err := os.Open(filePath)
+	if err != nil {
+		return "", fmt.Errorf("failed to open file: %w", err)
+	}
+	defer file.Close()
+
+	// Read the entire tar file
+	data, err := io.ReadAll(file)
+	if err != nil {
+		return "", fmt.Errorf("failed to read file: %w", err)
+	}
+
+	tarSum.Update(data)
+	return tarSum.Sum(), nil
+}
+
+func main() {
+	var excludes []string
+	var sorted bool
+
+	var rootCmd = &cobra.Command{
+		Use:   "tarsum [file]",
+		Short: "Calculate SHA256 checksum of tar files",
+		Args:  cobra.ExactArgs(1),
+		Run: func(cmd *cobra.Command, args []string) {
+			filePath := args[0]
+
+			// Check if file exists
+			if _, err := os.Stat(filePath); os.IsNotExist(err) {
+				fmt.Fprintf(os.Stderr, "Error: file %s does not exist\n", filePath)
+				os.Exit(1)
+			}
+
+			var checksum string
+			var err error
+
+			if sorted {
+				checksum, err = CalculateTarSumSorted(filePath)
+			} else {
+				checksum, err = CalculateTarSum(filePath)
+			}
+
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+				os.Exit(1)
+			}
+
+			fmt.Println(checksum)
+		},
+	}
+
+	rootCmd.Flags().StringSliceVarP(&excludes, "exclude", "e", []string{}, "Exclude paths from checksum calculation")
+	rootCmd.Flags().BoolVar(&sorted, "sorted", false, "Sort entries before calculating checksum")
+
+	if err := rootCmd.Execute(); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		os.Exit(1)
+	}
+}

archive/experimental/rust/between.rs

@@ -0,0 +1,55 @@
+use std::env;
+use std::fs::File;
+use std::io::{self, BufRead, BufReader};
+
+fn main() -> io::Result<()> {
+    let args: Vec<String> = env::args().collect();
+    if args.len() < 2 {
+        eprintln!("Usage: {} start-end [count] [file...]", args[0]);
+        std::process::exit(1);
+    }
+
+    let range = &args[1];
+    let (start, mut end) = if let Some(dash_pos) = range.find('-') {
+        (range[..dash_pos].parse().unwrap(), range[dash_pos + 1..].parse().unwrap())
+    } else {
+        (range.parse().unwrap(), 0)
+    };
+
+    let mut count = 1;
+    let mut files_start = 2;
+
+    if end == 0 {
+        if args.len() > 2 {
+            if let Ok(c) = args[2].parse::<usize>() {
+                count = c;
+                files_start = 3;
+            }
+        }
+        end = start + count - 1;
+    }
+
+    if args.len() > files_start {
+        for filename in &args[files_start..] {
+            let file = File::open(filename)?;
+            let reader = BufReader::new(file);
+            process_lines(reader, start, end)?;
+        }
+    } else {
+        // No files provided, read from stdin
+        let stdin = io::stdin();
+        let reader = stdin.lock();
+        process_lines(reader, start, end)?;
+    }
+
+    Ok(())
+}
+
+fn process_lines<R: BufRead>(reader: R, start: usize, end: usize) -> io::Result<()> {
+    reader.lines()
+          .enumerate()
+          .filter_map(|(i, line)| if i + 1 >= start && i + 1 <= end { line.ok() } else { None })
+          .for_each(|line| println!("{}", line));
+
+    Ok(())
+}

archive/experimental/rust/uniq.rs

@@ -0,0 +1,41 @@
+use std::env;
+use std::fs::File;
+use std::io::{self, BufRead, BufReader};
+use std::collections::HashSet;
+use std::hash::{Hash, Hasher};
+use std::collections::hash_map::DefaultHasher;
+
+fn main() -> io::Result<()> {
+    let args: Vec<String> = env::args().collect();
+
+    if args.len() > 1 {
+        for filename in &args[1..] {
+            let file = File::open(filename)?;
+            let reader = BufReader::new(file);
+            remove_duplicates(reader)?;
+        }
+    } else {
+        // No files provided, read from stdin
+        let stdin = io::stdin();
+        let reader = stdin.lock();
+        remove_duplicates(reader)?;
+    }
+
+    Ok(())
+}
+
+fn remove_duplicates<R: BufRead>(reader: R) -> io::Result<()> {
+    let mut seen_hashes = HashSet::new();
+    for line in reader.lines() {
+        let line = line?;
+        let mut hasher = DefaultHasher::new();
+        line.hash(&mut hasher);
+        let hash = hasher.finish();
+
+        if seen_hashes.insert(hash) {
+            println!("{}", line);
+        }
+    }
+
+    Ok(())
+}

archive/experimental/rust/uniq2.rs

@@ -0,0 +1,36 @@
+use std::collections::HashSet;
+use std::hash::{Hash, Hasher};
+use std::collections::hash_map::DefaultHasher;
+
+struct HashOnlySet {
+    set: HashSet<u64>,
+}
+
+impl HashOnlySet {
+    fn new() -> HashOnlySet {
+        HashOnlySet { set: HashSet::new() }
+    }
+
+    fn insert<T: Hash>(&mut self, item: &T) -> bool {
+        let hash = Self::hash_item(item);
+        self.set.insert(hash)
+    }
+
+    fn contains<T: Hash>(&self, item: &T) -> bool {
+        let hash = Self::hash_item(item);
+        self.set.contains(&hash)
+    }
+
+    fn hash_item<T: Hash>(item: &T) -> u64 {
+        let mut hasher = DefaultHasher::new();
+        item.hash(&mut hasher);
+        hasher.finish()
+    }
+}
+
+fn main() {
+    let mut set = HashOnlySet::new();
+    set.insert(&"Hello, world!");
+    println!("Contains 'Hello, world!': {}", set.contains(&"Hello, world!"));
+    println!("Contains 'Goodbye, world!': {}", set.contains(&"Goodbye, world!"));
+}