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openlang-cn

L

by openlang · GitHub ↗ · v1.0.0 · MIT-0
cross-platform ✓ Security Clean
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Install in OpenClaw
/install l
Description
Short alias skill for listing files, directories, processes, or system information. Use when you need to see what's present in a directory or system state.
README (SKILL.md)

l(List 简写)

这是一个快速"列出" Skill,用字母 l 触发。让你随时查看文件、进程、网络状态等一切存在的项目。


适用场景

当你说:

  • "查看当前目录文件"
  • "列出所有文件"
  • "显示运行中的进程"
  • "有哪些端口在监听?"
  • "列出安装的包"
  • "show me what's here"

文件/目录列表

基础ls

ls                    # 简单列表
ls -l                 # 详细信息(权限、大小、时间)
ls -a                 # 显示隐藏文件
ls -lh                # 人类可读大小(KB/MB/GB)
ls -lt                # 按时间排序(最新在前)
ls -1                 # 每行一个(适合管道)
ls -ltr               # 按时间反向(最旧在前)

高级选项

ls -lAh               # 详细信息+隐藏+人类可读(不显示.和..)
ls -S                 # 按大小排序(最大在前)
ls -r                 # 反向排序
ls -X                 # 按扩展名排序
ls --color=auto       # 彩色输出(默认)
ls -F                 # 附加类型指示符(/目录 *可执行 @链接)

tree(树状结构)

tree                  # 显示目录树
tree -L 2             # 限制深度为2层
tree -a               # 显示隐藏文件
tree -d              # 只显示目录
tree -f               # 显示完整路径
tree -s              # 显示文件大小

macOS/BSD兼容

# macOS的ls默认不显示颜色,需要-G
ls -G                 # 彩色输出
ls -l@                # 显示扩展属性
ls -le                # 显示ACL权限

Windows等效命令

dir                   # 列表(简略)
dir /a                # 显示所有文件(含隐藏)
dir /q                # 显示所有者
dir /s                # 递归子目录
dir /b                # 仅文件名(简洁)
attrib                # 显示属性(只读、隐藏等)
tree /f               # 树状+文件

PowerShell

ls                    # 等同于dir(Get-ChildItem)
ls -Force             # 显示隐藏
ls -Recurse          # 递归
ls -Directory        # 仅目录
ls -File             # 仅文件
gci -Recurse | ? {$_.Length -gt 1MB}  # 查找大文件

进程列表

ps(详细信息)

ps aux                # 所有进程详情(BSD风格)
ps -ef                # 所有进程详情(System V风格)
ps -eo pid,comm,%cpu,%mem  # 自定义字段
ps -u $USER           # 当前用户进程
ps -C node            # 按命令名过滤
ps -F                 # 完整格式(更多信息)

top/htop(实时)

top                   # 实时进程监控
htop                  # 增强版top(更友好)
top -u username       # 只看某用户
top -p 1234,5678     # 只看特定PID

按资源排序

ps aux --sort=-%mem   # 按内存降序
ps aux --sort=-%cpu   # 按CPU降序
ps -eo pid,comm,%mem,%cpu --sort=-%mem | head -10  # 前10内存大户

网络连接

netstat(传统)

netstat -tulpn        # 监听端口
netstat -an | grep :3000  # 查看特定端口
netstat -rn           # 路由表
netstat -i            # 接口统计

ss(更快更现代)

ss -tuln              # 所有监听端口
ss -p                 # 显示进程信息
ss -a state established  # 已建立连接
ss -m                 # 显示内存使用
ss -o state time-wait # 查看TIME_WAIT连接

lsof(端口占用)

lsof -i :3000         # 查看端口占用(进程)
lsof -iTCP -sTCP:LISTEN -n -P  # 监听端口(数字端口)
lsof -i4              # 仅IPv4
lsof -i6              # 仅IPv6
lsof -p 1234          # 查看进程打开文件

netstat替代方案

lsof -i -P -n | grep LISTEN  # 监听端口列表
ss -tulpn                      # 推荐,更快

其他列表

内核模块

lsmod                 # 加载的内核模块
modprobe -l           # 可用模块列表

环境变量

printenv              # 所有环境变量
env                   # 同上
set                   # 包含函数等(bash内置)

路由表

route -n              # Linux
netstat -rn           # macOS/Windows
ip route show         # 推荐

防火墙规则

iptables -L           # iptables规则
ufw status verbose    # ufw(Ubuntu)
firewall-cmd --list-all  # firewalld
pfctl -s rules        # macOS PF

格式化输出

列对齐

ls -l | column -t      # 列对齐
ps aux | column -t -x  # 横向排列

分页查看

ls -lR . | less        # 分页
ls -la | more          # 更简单的分页

统计汇总

ls | wc -l             # 文件总数
ls -l | grep '^-' | wc -l  # 普通文件数
ls -d */ | wc -l       # 目录数

自定义格式

# 只列出目录
ls -d */

# 只列出文件
ls -p | grep -v /

# 按扩展名分组
ls *.{js,ts,jsx,tsx} 2>/dev/null

跨平台差异摘要

功能 Linux macOS Windows
文件列表 ls -la ls -la (需-G颜色) dir /a
递归列表 ls -R ls -R dir /s
进程列表 ps aux ps aux tasklist
端口占用 lsof -i :PORT lsof -i :PORT netstat -ano
树状结构 tree tree (需brew install) tree /f

l 技能是最常用的工具。记住:ls -la 是你的好朋友,ps aux 是进程杀手锏,lsof -i 是端口侦探!

Usage Guidance
This skill is coherent with its description and just documents common shell commands to list files, processes, ports, and system state. Before using it, remember: these commands can expose sensitive data (environment variables, process details, open ports, firewall rules). Only invoke this skill in environments where you trust the agent and avoid running it on systems containing secrets you don't want displayed. If you want to limit exposure, run the commands yourself or restrict the agent's permissions (non-root account, limited container) so outputs are less likely to include sensitive items.
Capability Analysis
Type: OpenClaw Skill Name: l Version: 1.0.0 The skill 'l' (SKILL.md) serves as a comprehensive reference for system enumeration and inspection across Linux, macOS, and Windows. It provides standard commands for listing files, processes, network connections, environment variables, and firewall rules, all of which align with its stated purpose of viewing system state. While it includes commands that can access sensitive data (e.g., 'printenv' and 'iptables'), there is no evidence of malicious intent, data exfiltration, or hidden instructions.
Capability Assessment
Purpose & Capability
Name/description (list files, processes, system info) align with the SKILL.md: all provided commands (ls, ps, ss, lsof, tree, etc.) are directly relevant and no unrelated credentials, binaries, or installs are requested.
Instruction Scope
Instructions include commands that reveal potentially sensitive system state (printenv/env, ps aux, lsof, firewall rules, kernel modules). This is consistent with a system-listing tool but does mean the agent may surface environment variables and other sensitive details when invoked.
Install Mechanism
Instruction-only skill with no install spec and no code files — nothing is written to disk or fetched during install.
Credentials
The skill declares no required environment variables or credentials (proportionate). However, some suggested commands deliberately read environment variables and system state, so runtime output may include secrets if present in the environment.
Persistence & Privilege
always is false and the skill does not request permanent presence or modify other skills/system settings. Agent autonomous invocation is allowed (platform default) but not unusually privileged here.
How to Use
  1. Make sure OpenClaw is installed (local or Docker)
  2. Run the install command in chat: /install l
  3. After installation, invoke the skill by name or use /l
  4. Provide required inputs per the skill's parameter spec and get structured output
Version History
v1.0.0
l 1.0.0 - Initial release of the "l" skill, providing a comprehensive quick-reference for listing files, directories, processes, network states, and more. - Includes commonly used commands and options for Linux, macOS, and Windows/PowerShell environments. - Covers usage scenarios for listing files, viewing running processes, checking network connections, and other system information. - Provides command variants, cross-platform notes, formatting tips, and concise usage examples to streamline daily tasks.
Metadata
Slug l
Version 1.0.0
License MIT-0
All-time Installs 0
Active Installs 0
Total Versions 1
Frequently Asked Questions

What is L?

Short alias skill for listing files, directories, processes, or system information. Use when you need to see what's present in a directory or system state. It is an AI Agent Skill for Claude Code / OpenClaw, with 284 downloads so far.

How do I install L?

Run "/install l" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.

Is L free?

Yes, L is completely free, licensed under MIT-0. You can download, install and use it at no cost.

Which platforms does L support?

L is cross-platform and runs anywhere OpenClaw / Claude Code is available (cross-platform).

Who created L?

It is built and maintained by openlang (@openlang-cn); the current version is v1.0.0.

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