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#8
04-18-2008
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Quote:
U - is your prefix to the new filename, ( it can be anything ). ${i#P} - parameter substitution part, $i - is the original filename, # - operator that tells the shell to remove the pattern P from the filename, starting from the left to the right. Use % operator to perform the removal procedure from right to the left of the filename. See also ## and %% operators. P - is simply your pattern that needs to be replaced. It can be any part of the filename that you need to remove, ex P08, then the command would have been "${i#P08}" . The filenames might have spaces and other special characters, so it's always recommended using quotes- "${...}". Google key words "parameter substitution" to learn more. 
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