在bash脚本中重定向stdin和stdout

Question

I would like to create a bash script where it executes java command like:

java App < stdin > stdout 2> stderr

so I can run this script, pass files to stdin, stdout, stderr and it would execute it.

./script < file1 > file2 2> file3 

And it's gonna do:

java App < file1 > file2 2> file3

How to redirect input and output?

Answer 1

java已经从Shell继承了其文件描述符，因此您无需在脚本内做任何特殊的事情 ：

java App