// run calls systemctl with the given args, returning its standard output (and wrapped error)
func run(args ...string) ([]byte, error) {
bs, err := exec.Command("systemctl", args...).CombinedOutput()
if err != nil {
exitCode, _ := osutil.ExitCode(err)
return nil, &Error{cmd: args, exitCode: exitCode, msg: bs}
}
return bs, nil
}
// jctl calls journalctl to get the JSON logs of the given services, wrapping the error if any.
func jctl(svcs []string) ([]byte, error) {
cmd := []string{"journalctl", "-o", "json"}
for i := range svcs {
cmd = append(cmd, "-u", svcs[i])
}
bs, err := exec.Command(cmd[0], cmd[1:]...).Output() // journalctl can be messy with its stderr
if err != nil {
exitCode, _ := osutil.ExitCode(err)
return nil, &Error{cmd: cmd, exitCode: exitCode, msg: bs}
}
return bs, nil
}