# Use os.Args[0] in usage strings instead of hardcoded names

`7d69a31`→[main](/content/gh/entireio/git-sync/commits/main/index.html)·

pjbgf·2mo ago·2 files·+9 added/-9 removed

Keeps usage output accurate when the binary is renamed or invoked through a different path.

Assisted-by: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: Paulo Gomes <paulo@entire.io>

## Sessions

e8ae87b8f128View transcript

## Changes

2

- cmd

- git-sync-bench

- Mmain.go+1/-1

- git-sync

- Mmain.go+8/-8

```
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}

func usageError(message string) error {
	usage := "usage:\n  git-sync-bench --source-url <repo> [flags]\n\nflags:\n  --scenario bootstrap|sync\n  --repeat 3\n  --work-dir /tmp/git-sync-bench\n  --keep-targets\n  --json\n  --branch main,release\n  --map main:stable\n  --tags\n  --force\n  --prune\n  --stats\n  --measure-memory\n  --max-pack-bytes 104857600\n  --target-max-pack-bytes 104857600\n  --protocol auto|v1|v2\n  -v\n"
	usage := fmt.Sprintf("usage:\n  %s --source-url <repo> [flags]\n\nflags:\n  --scenario bootstrap|sync\n  --repeat 3\n  --work-dir /tmp/git-sync-bench\n  --keep-targets\n  --json\n  --branch main,release\n  --map main:stable\n  --tags\n  --force\n  --prune\n  --stats\n  --measure-memory\n  --max-pack-bytes 104857600\n  --target-max-pack-bytes 104857600\n  --protocol auto|v1|v2\n  -v\n", os.Args[0])
	if message == "" {
		return errors.New(strings.TrimSpace(usage))
	}
}
```

Mcmd/git-sync-bench/main.go+1/-1

```
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func usageError(message string) error {
	usage := fmt.Sprintf(`usage:
  git-sync sync [flags] <source-url> <target-url>
  git-sync replicate [flags] <source-url> <target-url>
  git-sync plan [flags] <source-url> <target-url>
  git-sync bootstrap [flags] <source-url> <target-url>
  git-sync probe [flags] <source-url> [target-url]
  git-sync fetch [flags] <source-url>
  %[1]s sync [flags] <source-url> <target-url>
  %[1]s replicate [flags] <source-url> <target-url>
  %[1]s plan [flags] <source-url> <target-url>
  %[1]s bootstrap [flags] <source-url> <target-url>
  %[1]s probe [flags] <source-url> [target-url]
  %[1]s fetch [flags] <source-url>

sync flags:
  --branch main,dev
  -v
  --stats
  --measure-memory
  --json
  --materialized-max-objects %d
  --materialized-max-objects %[2]d
  --max-pack-bytes <bytes>
  --target-max-pack-bytes <bytes>
  --protocol auto|v1|v2
`, unstable.DefaultMaterializedMaxObjects)
`, os.Args[0], unstable.DefaultMaterializedMaxObjects)
	if message == "" {
		return errors.New(strings.TrimSpace(usage))
	}
}
```

Mcmd/git-sync/main.go+8/-8