output            236 execwrappers.cpp   FILE *output;
output            238 execwrappers.cpp     output = _real_popen(path, "r");
output            243 execwrappers.cpp     output = _real_popen(command.c_str(), "r");
output            245 execwrappers.cpp   int numRead = fread(buf, 1, bufSize - 1, output);
output            248 execwrappers.cpp   pclose(output); // /lib/libXXX process is now done; can checkpoint now