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#!/bin/sh
rename()
{
## Expression 1:
# For CDs or volumes 1-01 -> 1_01
## Expression 2:
# * don't match the start (^)
# match the first part with a number and replace following [ -.] by '. '
sed -e 's/^\s*\([0-9]\+\)[ -_.]\([0-9]\+\)/\1_\2. /' \
-e 's#\s*\([0-9]\+\)[ -.]\+#\1. #'
}
if [ ! -t 0 ]
then
rename
elif [ "$1" ]
then
printf '%s' "$1" | rename
else
exit 1
fi
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