Add os cases

2025-08-04 06:51:42 +00:00 · 2017-05-24 11:22:23 +08:00
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+## Busybox
+
+### 简介
+
+![Busybox - Linux 瑞士军刀](_images/busybox-logo.png)
+
+BusyBox 是一个集成了一百多个最常用 Linux 命令和工具（如 cat、echo、grep、mount、telnet 等）的精简工具箱，它只需要几 MB 的大小，很方便进行各种快速验证，被誉为“Linux 系统的瑞士军刀”。
+
+BusyBox 可运行于多款 POSIX 环境的操作系统中，如 Linux（包括 Android）、Hurd、FreeBSD 等。
+
+### 获取官方镜像
+
+在 Docker Hub 中搜索 busybox 相关的镜像。
+
+```sh
+$ docker search busybox
+NAME                            DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
+busybox                         Busybox base image.                             755       [OK]
+progrium/busybox                                                                63                   [OK]
+radial/busyboxplus              Full-chain, Internet enabled, busybox made...   11                   [OK]
+odise/busybox-python                                                            3                    [OK]
+multiarch/busybox               multiarch ports of ubuntu-debootstrap           2                    [OK]
+azukiapp/busybox                This image is meant to be used as the base...   2                    [OK]
+...
+```
+
+读者可以看到最受欢迎的镜像同时带有 OFFICIAL 标记，说明它是官方镜像。用户使用 docker pull 指令下载镜像 `busybox:latest`：
+
+```sh
+$ docker pull busybox:latest
+busybox:latest: The image you are pulling has been verified
+e433a6c5b276: Pull complete
+e72ac664f4f0: Pull complete
+511136ea3c5a: Pull complete
+df7546f9f060: Pull complete
+Status: Downloaded newer image for busybox:latest
+```
+
+下载后，可以看到 busybox 镜像只有2.433 MB：
+
+```sh
+$ docker images
+REPOSITORY                   TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
+busybox                   latest              e72ac664f4f0        6 weeks ago         2.433 MB
+```
+
+### 运行 busybox
+
+启动一个 busybox 容器，并在容器中执行 grep 命令。
+
+```sh
+$ docker run -it busybox
+/ # grep
+BusyBox v1.22.1 (2014-05-22 23:22:11 UTC) multi-call binary.
+
+Usage: grep [-HhnlLoqvsriwFE] [-m N] [-A/B/C N] PATTERN/-e PATTERN.../-f FILE [FILE]...
+
+Search for PATTERN in FILEs (or stdin)
+
+        -H      Add 'filename:' prefix
+        -h      Do not add 'filename:' prefix
+        -n      Add 'line_no:' prefix
+        -l      Show only names of files that match
+        -L      Show only names of files that don't match
+        -c      Show only count of matching lines
+        -o      Show only the matching part of line
+        -q      Quiet. Return 0 if PATTERN is found, 1 otherwise
+        -v      Select non-matching lines
+        -s      Suppress open and read errors
+        -r      Recurse
+        -i      Ignore case
+        -w      Match whole words only
+        -x      Match whole lines only
+        -F      PATTERN is a literal (not regexp)
+        -E      PATTERN is an extended regexp
+        -m N    Match up to N times per file
+        -A N    Print N lines of trailing context
+        -B N    Print N lines of leading context
+        -C N    Same as '-A N -B N'
+        -e PTRN Pattern to match
+        -f FILE Read pattern from file
+```
+
+查看容器内的挂载信息。
+
+```sh
+/ # mount
+rootfs on / type rootfs (rw)
+none on / type aufs (rw,relatime,si=b455817946f8505c)
+proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
+tmpfs on /dev type tmpfs (rw,nosuid,mode=755)
+shm on /dev/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=65536k)
+devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666)
+sysfs on /sys type sysfs (ro,nosuid,nodev,noexec,relatime)
+/dev/disk/by-uuid/b1f2dba7-d91b-4165-a377-bf1a8bed3f61 on /etc/resolv.conf type ext4 (rw,relatime,errors=remount-ro,data=ordered)
+/dev/disk/by-uuid/b1f2dba7-d91b-4165-a377-bf1a8bed3f61 on /etc/hostname type ext4 (rw,relatime,errors=remount-ro,data=ordered)
+/dev/disk/by-uuid/b1f2dba7-d91b-4165-a377-bf1a8bed3f61 on /etc/hosts type ext4 (rw,relatime,errors=remount-ro,data=ordered)
+devpts on /dev/console type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
+proc on /proc/sys type proc (ro,nosuid,nodev,noexec,relatime)
+proc on /proc/sysrq-trigger type proc (ro,nosuid,nodev,noexec,relatime)
+proc on /proc/irq type proc (ro,nosuid,nodev,noexec,relatime)
+proc on /proc/bus type proc (ro,nosuid,nodev,noexec,relatime)
+tmpfs on /proc/kcore type tmpfs (rw,nosuid,mode=755)
+```
+
+busybox 镜像虽然小巧，但包括了大量常见的 Linux 命令，读者可以用它快速熟悉 Linux 命令。
+
+### 相关资源
+
+* `Busybox` 官网：`https://busybox.net/`
+* `Busybox` 官方仓库：`https://git.busybox.net/busybox/`
+* `Busybox` 官方镜像：`https://hub.docker.com/_/busybox/`
+* `Busybox` 官方仓库：`https://github.com/docker-library/busybox`
+