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POsh not found when executing shell command from C++
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  1. POsh not found when executing shell command from C++
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    copied!<p>I have a function in my C++ program like this:</p> <pre><code>std::string SysExec::executeAndReturnResult(char* cmd) { //cout &lt;&lt; "[SHELL] : " &lt;&lt; cmd &lt;&lt; endl; FILE* pipe = popen(cmd, "r"); if (!pipe) return "ERROR"; char buffer[128]; std::string result = ""; while (!feof(pipe)) { if (fgets(buffer, 128, pipe) != NULL) result += buffer; } pclose(pipe); return result; } </code></pre> <p>When I call it </p> <pre><code>SysExec::executeAndReturnResult("/usr/bin/irsend -d /var/run/lirc/lircd-lirc0 SEND_ONCE Samsung 4"); </code></pre> <p>I get this:</p> <pre><code>sh: 4: not found </code></pre> <p>However, if I try to same command from the console, it works fine.</p> <p>I would like to mention that calling it with a non-numeric argument works with no issue — the following works fine:</p> <pre><code>SysExec::executeAndReturnResult("irsend -d /var/run/lirc/lircd-lirc0 SEND_ONCE Samsung channel+") </code></pre> <p>I have tried Google..but to no avail. Can anyone help me understanding the issue?</p> <p>//edit on request:</p> <p>my SysExec.h file looks like this:</p> <pre><code>#include "CompileFlags.h" /* * sysexec.h * * Created on: Dec 19, 2012 * Author: Shrouk H. Khan / Fingi / root */ #ifndef SYSEXEC_H_ #define SYSEXEC_H_ #include&lt;stdio.h&gt; #include &lt;string&gt; #include &lt;boost/algorithm/string.hpp&gt; namespace fingigcc { class SysExec { public: SysExec(); virtual ~SysExec(); static std::string executeAndReturnResult(char* cmd); static int executeAndForget(char* cmd); static int execute(char* cmd); }; } /* namespace fingigcc */ #endif /* SYSEXEC_H_ */ </code></pre> <p>And the corresponding cpp file looks like this:</p> <pre><code>/* * SysExec.cpp * * Created on: Dec 19, 2012 * Author: Shrouk H. Khan / Fingi / root */ #include "../../includes/SysExec.h" #include "../../includes/Logger.h" #include &lt;cstdlib&gt; #include &lt;iostream&gt; #include &lt;stdio.h&gt; #include &lt;unistd.h&gt; namespace fingigcc { SysExec::SysExec() { // TODO Auto-generated constructor stub } SysExec::~SysExec() { // TODO Auto-generated destructor stub } std::string SysExec::executeAndReturnResult(char* cmd) { //cout &lt;&lt; "[SHELL] : " &lt;&lt; cmd &lt;&lt; endl; FILE* pipe = popen(cmd, "r"); if (!pipe) return "ERROR"; char buffer[128]; std::string result = ""; while (!feof(pipe)) { if (fgets(buffer, 128, pipe) != NULL) result += buffer; } pclose(pipe); return result; } int SysExec::executeAndForget(char* cmd) { //cout &lt;&lt; "[SHELL] : " &lt;&lt; cmd &lt;&lt; endl; //do not try to log it..infinite loop.. // pid_t pid = fork(); // if (pid &lt; 0) { // return -1; // } else if (pid == 0) { // execl(cmd, (char *) 0); // } else { // // } system(cmd); return 0; } } /* namespace fingigcc */ </code></pre>
 

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