[CentOS] ssh remote execute awk problem

Hi , all :

There is a problem on executing awk command to remote servers;

The shell test script is like this :

1. #!/bin/sh 2. 3. _CMD="ssh root@localhost" 4. 5. cpu_num="$($_CMD awk '/processor/{count["proc"]++}; END{print count["proc"]}' /proc/cpuinfo)“ 6. 7. echo $cpu_num

My root account can entry the server without the passwd.

But I found no result on the screen .

Is there some error on that script ? By the way , I googled and found use the following method can run the right result .

1. #!/bin/sh 2. 3. _CMD="ssh root@localhost" 4. 5. cpu_num="$($_CMD << 'HERE' 6. awk '/processor/{count["proc"]++}; END{print count["proc"]}' /proc/cpuinfo 7. HERE 8. 9. )“ 10. 11. echo $cpu_num