| // Copyright 2015 The etcd Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // Package osutil implements operating system-related utility functions. |
| package osutil |
| |
| import ( |
| "os" |
| "strings" |
| |
| "github.com/coreos/pkg/capnslog" |
| ) |
| |
| var ( |
| plog = capnslog.NewPackageLogger("github.com/coreos/etcd", "pkg/osutil") |
| |
| // support to override setting SIG_DFL so tests don't terminate early |
| setDflSignal = dflSignal |
| ) |
| |
| func Unsetenv(key string) error { |
| envs := os.Environ() |
| os.Clearenv() |
| for _, e := range envs { |
| strs := strings.SplitN(e, "=", 2) |
| if strs[0] == key { |
| continue |
| } |
| if err := os.Setenv(strs[0], strs[1]); err != nil { |
| return err |
| } |
| } |
| return nil |
| } |