How to Reliably Execute Piped Commands Using Java's Runtime.exec()?

Executing Piped Commands with Runtime.exec()

In Java, Runtime.exec() is commonly used to execute shell commands. However, attempting to execute a pipe-delimited command like "ls /etc | grep release" directly using Runtime.exec() may result in unexpected behavior due to cross-platform differences in pipe handling.

Solution:

1. Create a Script:

To ensure platform-independent pipe execution, write a script that performs the desired pipeline and execute the script instead of the separate commands. For example:

Then execute the script using Runtime.exec():

2. Use Shell Invocation:

Another approach is to invoke the shell directly and pass the pipe-delimited command as a single argument. This can be achieved using the following code:

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