嵌入式Linux中的busybox显示“找不到小程序”
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busybox in embedded linux shows "applet not found"
提问by Ezio
I compiled busybox myself,and I put it in our embedded linux. But I have some questions.
我自己编译了busybox，放在我们的嵌入式linux中。但我有一些问题。
Question 1:When I try to use some command such as gzip,it prints "gzip: applet not found".While I checked the menuconfig of busybox,I make sure that I've selected "gzip".
问题 1：当我尝试使用某些命令（例如 gzip）时，它会打印“gzip: applet not found”。当我检查了 busybox 的 menuconfig 时，我确保我选择了“gzip”。
Question 2:I used to work with VIM,but busybox just provide VI.So I make a link VIM to VI,but when I typed vim and run it,it also show "vim: applet not found".
问题2：我以前用过vim，但是busybox只提供vi，所以我做了一个vim到vi的链接，但是当我输入vim并运行它时，它也显示“vim: applet not found”。
Anybody can help me with this problem that "applet not found"? Thank you very much.
任何人都可以帮助我解决“未找到小程序”的问题？非常感谢。
PS:I'm confused with the "applet" of busybox,what it is? Like "applet" in java?
PS：我对busybox的“小程序”感到困惑，它是什么？像Java中的“小程序”？
回答by Luis Lavaire
The answer to questions 1 and 2 is: you must set your PATHvariable first or compile busybox with FEATURE_PREFER_APPLETSenabled. You can set the PATHvariable with:
问题 1 和问题 2 的答案是：您必须先设置PATH变量或在FEATURE_PREFER_APPLETS启用时编译 busybox 。您可以使用以下方法设置PATH变量：
$ export PATH=/bin:/sbin:/usr/bin:/usr/sbin
A busybox applet is a small application that is usually found in the UNIX common utilities (defined in the POSIX standard). This applets are compiled into a single executable: busybox.
busybox 小程序是一个小应用程序，通常可以在 UNIX 通用实用程序（在 POSIX 标准中定义）中找到。这个小程序被编译成一个单一的可执行文件：busybox.
回答by KEINOS
[F.Y.I.] Shebang's typo caused me the same applet not founderror.
[FYI] Shebang 的拼写错误导致了我同样的applet not found错误。
$ # The '!' was forgotten in shebang
$ cat sample.sh
#/bin/sh
echo 'hello world'
$ ./sample.sh
sample.sh: applet not found
In docker-compose, running the above script gives me the blow error:
在 docker-compose 中，运行上面的脚本给了我一个打击错误：
standard_init_linux.go:211: exec user process caused "exec format error"
