Since i could do below in shell script, 

o=`ssh host1 tail -1 /dir/results`

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I thought I could easily do below in perl

my $result = `ssh host1 echo something | /bin/others`

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but I coudln't do it... I know there are SSH modules to do this but since I have public key stored in server, I don't need to enter passwd so I thought I could easily do this but it doesn't work..
It seems to totally try to run entire line at remote machine, from my $result to end of the line.
Is there anyway to get this done w/out using the ssh modules?

In reply to back tick to do ssh by convenientstore

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