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Ls commands

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# 1  
Old 09-24-2013
Ls commands
So I need a way to list all files that contain 4 letters.

Also separately I need to find a way to list all files with l or n as the third letter of the name.

I need to use the ls command and/or grep/egrep.

Any help would be a appreciated.
# 2  
Old 09-24-2013
Sounds like homework!

--ahamed
# 3  
Old 09-24-2013
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