53 lines
942 B
Go
53 lines
942 B
Go
// +build linux
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package common
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import (
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"os"
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"os/exec"
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"strings"
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)
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func DoSysctrl(mib string) ([]string, error) {
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hostEnv := os.Environ()
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foundLC := false
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for i, line := range hostEnv {
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if strings.HasPrefix(line, "LC_ALL") {
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hostEnv[i] = "LC_ALL=C"
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foundLC = true
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}
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}
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if !foundLC {
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hostEnv = append(hostEnv, "LC_ALL=C")
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}
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sysctl, err := exec.LookPath("/sbin/sysctl")
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if err != nil {
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return []string{}, err
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}
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cmd := exec.Command(sysctl, "-n", mib)
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cmd.Env = hostEnv
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out, err := cmd.Output()
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if err != nil {
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return []string{}, err
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}
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v := strings.Replace(string(out), "{ ", "", 1)
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v = strings.Replace(string(v), " }", "", 1)
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values := strings.Fields(string(v))
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return values, nil
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}
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func NumProcs() (uint64, error) {
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f, err := os.Open(HostProc())
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if err != nil {
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return 0, err
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}
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defer f.Close()
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list, err := f.Readdirnames(-1)
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if err != nil {
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return 0, err
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}
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return uint64(len(list)), err
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}
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