ssh remote execute awk problem

[sync <jiannma@xxxxxxxxx>]

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

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