How to Execute Piped Commands Effectively Using Go's `exec.Command()`?-Golang-php.cn

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How to Execute Piped Commands Effectively Using Go's `exec.Command()`?

Barbara Streisand

Dec 15, 2024 pm 08:36 PM

How to Execute Piped Commands Effectively Using Go's `exec.Command()`?

Executing Piped Commands with Go's exec.Command()

When running commands using exec.Command(), it's possible to execute commands that contain pipes, allowing you to chain multiple commands together.

For instance, the following command runs ps cax and succeeds:

However, attempting to pipe the output of ps cax into grep myapp using the following command fails:

To resolve this issue, we can adopt a more idiomatic approach using pipes in Go:

In this example, we create two exec.Cmd structs, one for each command, and then establish a pipe between the stdout of ps and the stdin of grep. By starting ps first, we ensure that its output is available for grep to consume. Subsequently, we run grep and retrieve its output, effectively chaining the two commands together.

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