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a/src/execmd.h b/src/execmd.h
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     */
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     */
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    int startExec(const std::string &cmd, const std::vector<std::string>& args, 
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    int startExec(const std::string &cmd, const std::vector<std::string>& args, 
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          bool has_input, bool has_output);
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          bool has_input, bool has_output);
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    int send(const std::string& data);
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    int send(const std::string& data);
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    int receive(std::string& data, int cnt = -1);
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    int receive(std::string& data, int cnt = -1);
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    int getline(std::string& data);
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    int getline(std::string& data, int timeosecs = -1);
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    int wait();
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    int wait();
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    /** Wait with WNOHANG set. 
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    /** Wait with WNOHANG set. 
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    @return true if process exited, false else.
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    @return true if process exited, false else.
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    @param O: status, the wait(2) call's status value */
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    @param O: status, the wait(2) call's status value */
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    bool maybereap(int *status);
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    bool maybereap(int *status);