nushell 利用管道控制系统

nushell shell 命令行工具

安装

MacOS 系统通过 brew 安装

brew install nushell

Linux 系统通过 npm 安装在

npm install -g nushell

输入命令 nu 进入 nushell 环境

$ nu
     __  ,
 .--()°'.' Welcome to Nushell,
'|, . ,'   based on the nu language,
 !_-(_\    where all data is structured!

Please join our Discord community at https://discord.gg/NtAbbGn
Our GitHub repository is at https://github.com/nushell/nushell
Our Documentation is located at https://nushell.sh
Tweet us at @nu_shell
Learn how to remove this at: https://nushell.sh/book/configuration.html#remove-welcome-message

It's been this long since Nushell's first commit:
4yrs 6months 28days 17hrs 11mins 45secs 833ms 224µs

Startup Time: 73ms 831µs 83ns

~/Server/Run/run_s/shells>

常用用法

文件排序

~/Web/Work/vconsole/config> ls | where type == file | sort-by size | reverse | first 6 | select name size                                                                                                               06/02/2023 04:35:52 PM
╭───┬─────────────────┬────────╮
│ # │      name       │  size  │
├───┼─────────────────┼────────┤
│ 0 │ common.yaml     │ 2.2 KB │
│ 1 │ extra.yaml      │ 1.1 KB │
│ 2 │ extra.dev.yaml  │ 1.1 KB │
│ 3 │ extra.test.yaml │ 1.1 KB │
│ 4 │ extra.beta.yaml │ 1.1 KB │
│ 5 │ extra.prod.yaml │ 1.1 KB │
╰───┴─────────────────┴────────╯

列出文件大小大于 100M 的文件

$ ls **/* | where size > 100mb
╭────┬──────────────────────────────────────┬──────┬──────────┬────────────╮
│  # │                 name                 │ type │   size   │  modified  │
├────┼──────────────────────────────────────┼──────┼──────────┼────────────┤
│  0 │ logs/run-2023-05-25T01-10-29.308.log │ file │ 104.9 MB │ a week ago │
│  1 │ logs/run-2023-05-25T01-37-29.809.log │ file │ 104.9 MB │ a week ago │
│  2 │ logs/run-2023-05-25T02-06-34.493.log │ file │ 104.9 MB │ a week ago │
│  3 │ logs/run-2023-05-25T11-45-31.307.log │ file │ 104.9 MB │ a week ago │
│  4 │ logs/run-2023-05-26T01-00-02.979.log │ file │ 104.9 MB │ a week ago │
│  5 │ logs/run-2023-05-29T14-55-42.392.log │ file │ 104.9 MB │ 4 days ago │
│  6 │ logs/run-2023-05-30T02-00-46.427.log │ file │ 104.9 MB │ 3 days ago │
│  7 │ logs/run-2023-05-30T08-59-08.837.log │ file │ 104.9 MB │ 3 days ago │
│  8 │ logs/run-2023-05-30T08-59-13.065.log │ file │ 104.9 MB │ 3 days ago │
│  9 │ logs/run-2023-05-30T08-59-16.678.log │ file │ 104.9 MB │ 3 days ago │
│ 10 │ logs/run-2023-05-30T08-59-21.207.log │ file │ 104.9 MB │ 3 days ago │
│ 11 │ logs/run-2023-05-30T08-59-24.170.log │ file │ 104.9 MB │ 3 days ago │
│ 12 │ logs/run-2023-05-30T08-59-35.234.log │ file │ 104.9 MB │ 3 days ago │
│ 13 │ logs/test.lll                        │ file │ 104.9 MB │ a week ago │
│ 14 │ logs/test.log                        │ file │ 104.9 MB │ a week ago │
│ 15 │ logs/test.o                          │ file │ 104.9 MB │ a week ago │
│ 16 │ logs/test.ou                         │ file │ 104.9 MB │ a week ago │
│ 17 │ logs/test.out                        │ file │ 102.8 MB │ a week ago │
│ 18 │ logs/test.tt                         │ file │ 104.9 MB │ a week ago │
╰────┴──────────────────────────────────────┴──────┴──────────┴────────────╯

使用help commands, 友好的 nushell 预先提供了这个”小抄”指令

help commands

过滤

help commands | where name =~ un | select name | to json

使用 get 提取信息，并且通过 ^echo 命令调用外部的命令

sys | get host.sessions.name | each { |it| ^echo $it }

通过 url 获取 api 信息

> http get https://api.github.com/repos/nushell/nushell | get license                                                                                                                             06/02/2023 06:01:28 PM
╭─────────┬─────────────────────────────────────╮
│ key     │ mit                                 │
│ name    │ MIT License                         │
│ spdx_id │ MIT                                 │
│ url     │ https://api.github.com/licenses/mit │
│ node_id │ MDc6TGljZW5zZTEz                    │
╰─────────┴─────────────────────────────────────╯

循环

ls | enumerate | each { |it| $"Number ($it.index) is size" }

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其它

zx Writing shell scripts in Nushell