cc-cmds

What shell commands does Claude Code run most? 54,636 Bash calls. cat is #1 at 5,198 times. grep runs 4,516 times despite a dedicated Grep tool existing.

Bash tool analysis — command categories, top prefixes, timeout usage.

npx cc-cmds

No install. No dependencies.

What it shows

• Total Bash calls — across all sessions
• Command categories — shell utils, Python, PowerShell, Git, npm/node, and more
• Top 10 commands — the exact commands used most often
• Timeout usage — % of calls that set a custom timeout
• Sessions using Bash — how many sessions touched the terminal

Output

  cc-cmds — Bash Command Analysis
  ════════════════════════════════════════

  ▸ Overview
    Total Bash calls:   54,636
    Sessions using Bash:1,484
    With timeout set:   10,594 (19.4%)

  ▸ Command categories
    Shell utils    ████████████████  42.4%  (23,186)
    Other          ███████████░░░░░  27.9%  (15,258)
    Python         ███░░░░░░░░░░░░░   7.1%  (3,896)
    cd             ██░░░░░░░░░░░░░░   5.4%  (2,928)
    PowerShell     ██░░░░░░░░░░░░░░   5.1%  (2,812)
    Git            ██░░░░░░░░░░░░░░   4.1%  (2,249)

  ▸ Most used commands
    cat               ████████████████  9.5%  (5,198)
    ls                ███████████████░  8.7%  (4,758)
    grep              ██████████████░░  8.3%  (4,516)
    sleep             ████████████░░░░  7.0%  (3,822)
    python3           ████████████░░░░  6.9%  (3,752)
    cdp-eval          █████████░░░░░░░  5.4%  (2,947)
    cd                █████████░░░░░░░  5.4%  (2,928)
    powershell.exe    █████████░░░░░░░  5.1%  (2,812)
    git               ███████░░░░░░░░░  4.1%  (2,249)
    find              █████░░░░░░░░░░░  2.7%  (1,496)

Options

npx cc-cmds          # terminal output
npx cc-cmds --json   # JSON output for scripting

JSON output

{
  "version": "1.0.0",
  "totalBashCalls": 54636,
  "sessionsWithBash": 1484,
  "withTimeout": 10594,
  "timeoutPct": 19.4,
  "categories": [
    { "name": "shell_utils", "count": 23186, "pct": 42.4 },
    { "name": "other", "count": 15258, "pct": 27.9 }
  ],
  "topPrefixes": [
    { "prefix": "cat", "count": 5198 },
    { "prefix": "ls", "count": 4758 }
  ]
}

Browser version

Try it without installing: yurukusa.github.io/cc-cmds

Drag-drop your ~/.claude/projects/ folder (or any subfolder) to analyze.

How it works

Reads ~/.claude/projects/**/*.jsonl session transcripts and extracts every Bash tool call. Classifies commands by first token into categories (shell utils, Python, PowerShell, Git, npm/node, file ops, Bash scripts, Godot, gh CLI, curl/wget) and tracks top prefixes. Zero external dependencies.

Part of cc-toolkit — 74 tools for understanding your Claude Code sessions.