packer-cn/packer-plugin-sdk/common/command.go

23 lines
813 B
Go

package common
import (
"os/exec"
)
// CommandWrapper is a type that given a command, will modify that
// command in-flight. This might return an error.
// For example, your command could be `foo` and your CommandWrapper could be
// func(s string) (string, error) {
// return fmt.Sprintf("/bin/sh/ %s", s)
// }
// Using the CommandWrapper, you can set environment variables or perform
// string interpolation once rather than many times, to save some lines of code
// if similar wrapping needs to be performed many times during a plugin run.
type CommandWrapper func(string) (string, error)
// ShellCommand takes a command string and returns an *exec.Cmd to execute
// it within the context of a shell (/bin/sh).
func ShellCommand(command string) *exec.Cmd {
return exec.Command("/bin/sh", "-c", command)
}