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ssh in perl

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# 1  
Old 09-26-2012
ssh in perl
Hi
Can anyone tell me what does the below command do in Perl

Quote:
my @arrayline=`ssh -n $user\@$server $cmd`;
Thanks in advance
# 2  
Old 09-26-2012
Code:
my @arrayline=`ssh -n $user\@$server $cmd`;

above code connects to server whose user name is $user, server address is $server.
and executes command $cmd and assign the output to your variable..
This User Gave Thanks to pamu For This Post:
irudayaraj
# 3  
Old 09-26-2012
Quote:
Originally Posted by irudayaraj
my @arrayline=`ssh -n $user\@$server $cmd`;
I consider this a bad way of coding in perl. Unless absolutely necessary, I don't consider it a good practice to invoke system commands in backticks. Check for more perl-ish alternatives. For e.g., there's an SSH module available in CPAN which will enable you to connect to another machine. Also, using system commands in perl defeats portability to different platforms. I've seen people in my previous work-place who have written quick-and-dirty perl scripts with lots of system calls. Instead it would be better to write the whole program in underlying OS' shell.
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