popen.h

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you 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
//
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// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
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// Date: 2017/11/04 17:13:18

#ifndef  PUBLIC_COMMON_POPEN_H
#define  PUBLIC_COMMON_POPEN_H

#include <ostream>

namespace butil {

// Read the stdout of child process executing `cmd'.
// Returns the exit status(0-255) of cmd and all the output is stored in
// |os|. -1 otherwise and errno is set appropriately.
int read_command_output(std::ostream& os, const char* cmd);

}

#endif  //PUBLIC_COMMON_POPEN_H