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Use of "@ ret =" in sh script

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# 1  
Old 08-22-2012
Use of "@ ret =" in sh script
I've been thrown into debugging a sh script and have run into an unfamiliar bit of code. In part the code is:
Code:
 
set ret = 1
   set roop = 0
   while( $ret == 1 )
    @ ret = `rcp chPhase.dat.default "$remoteUser@$ENGINE_HOST\:/gp/tune/chPhase.dat"$remoteUser@$ENGINE_HOST\:/gp/tune/chPhase.dat`
    if( $ret == 0 ) then
     break
    endif
    @ roop ++
    if( $roop >= 10 ) then
     break
    endif
    sleep 2
   end

After days of searching I'm unable to find an explaination for the @ logical = part.
What does "@ ret" and "@ roop ++" di?

Sorry for the noob questions, I'm not a programmer, just a fall guy.
Thanks


Moderator's Comments:
Mod Comment Please view this code tag video for how to use code tags when posting code and data.
Last edited by vbe; 08-22-2012 at 05:03 PM.. Reason: rm email tags
# 2  
Old 08-22-2012
Look at this info: What does @ mean??? | DaniWeb

What shell are you using? This will show you:
Code:
ps -p $$

This User Gave Thanks to spacebar For This Post:
Stmpjmp
# 3  
Old 08-22-2012
It looks like tcsh or csh.
Code:
@[space]variablename = 10

means define variablename as numeric and assign a number to it.
This User Gave Thanks to jim mcnamara For This Post:
Stmpjmp
# 4  
Old 08-22-2012
Thank you spacebar
Thank you jim mcnamara
Both replies imply computations or value assignments and the above code is simply wanting to copy a file from the host to a remote machine. Seems like there should (and WILL) be a better way.
I can't wrap my head around the reason the author would confuse the issue so badly.
Again, thanks.
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