运行从标准输入管道传输的脚本（Linux/Shell 脚本）
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Run a script piped from stdin (Linux/Shell Scripting)
提问by Switch
Suppose I have a script: my_script.sh
假设我有一个脚本：my_script.sh
Instead of doing
而不是做
./my_script.sh
I want to do something like:
我想做类似的事情：
cat my_script.sh | <some command here>
such that the script executes. Is this possible?
以便脚本执行。这可能吗？
The use case is if the script I want to execute is the output of a wget or s3cat, etc. Right now I save it to a temporary file, change it to executable, and then run it. Is there a way to do it directly?
用例是如果我要执行的脚本是 wget 或 s3cat 等的输出。现在我将它保存到一个临时文件中，将其更改为可执行文件，然后运行它。有没有办法直接做到这一点？
采纳答案by Mat
Just pipe it to your favorite shell, for example:
只需将其通过管道传输到您最喜欢的 shell，例如：
$ cat my_script.sh
set -x
echo hello
$ cat my_script.sh | sh
+ echo hello
hello
(The set -xmakes the shell print out each statement it is about to run before it runs it, handy for debugging, but it has nothing to do with your issue specifically - just there for demo purposes.)
（这set -x使得 shell 在运行之前打印出它将要运行的每个语句，便于调试，但它与您的问题无关 - 仅用于演示目的。）
回答by Mihai
You could use stdin from pipe:
您可以使用管道中的标准输入：
cat my_script.sh | xargs -i <some_command> {}
or:
或者：
cat my_script.sh | bash -
or (just from stdin):
或（仅来自标准输入）：
bash < my_script.sh
回答by l0b0
RVM recommends this method to run their installer:
RVM 推荐这种方法来运行他们的安装程序：
bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer)
