Finalcmd=string (" timeout 3/bin/sh -c ")
+ string (" \ "(export TERM=dumb & amp; & CD ") + lastpath
+ string (" "& amp; & ") + command
+ string (" "& amp; & Echo -n MYPWD=& amp; & The PWD) 2 & gt; & 1 ")
+ string (" | iconv - c - s - f utf-8 -t gb2312 \ "2 & gt; & 1 ");

Popen (finalcmd c_str (), "r");

When the command=echo "' {} '()' \}}, {{'

Error: proceedings of the sh: 1: Syntax error: ") "unexpected

But in the pipeline to redirect error, cannot catch this error,

Consult how to modify finalcmd?