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Checking if file exists and unzipping

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# 8  
Old 11-19-2012
Corona688, I am redirecting error to /dev/null , BTW why ls is redundant here?
# 9  
Old 11-19-2012
Because you're running an external program when there was no need to do so.

Actually, you're running two external programs when there was no need to do so, inside a subshell, so a waste of three processes as opposed to zero.
# 10  
Old 11-19-2012
Got it, so actually it is not redundant but not required or inefficient. As per the page I think it is said redundant because ls is used in a for loop with *glob.
# 11  
Old 11-22-2012
It's redundant because you don't actually need the ls to list the files. If you're globbing, you already have them.
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