#! /bin/sh
# Usage: ./low.sh <-l | -u> <target_directory>
#./low.sh -l directory 为全部转化为小写
#./low.sh -u directory 为全部转化为大写
#
# 第二形参必须是目录，第一形参指定-l或-u
#
if [ $# -ne 2 ] ; then
echo "Usage: ${0} <-l | -u> <target_directory>"
exit 1
fi
if [ ! -d ${2} -o "${1}" != "-l" -a "${1}" != "-u" ] ; then
echo "Usage: ${0} <-l | -u> <target_directory>"
exit 1
fi
dir=`dirname "${2}"`
cd ${dir} > /dev/null 2>&1
if [ $? -ne 0 ] ; then
echo "Error: checking your ${dir}"
exit 1
fi
exec 1>/dev/null 2>&1
if [ "${1}" = "-l" ] ; then
base=`basename "${2}" | tr "[A-Z]" "[a-z]"`
else
base=`basename "${2}" | tr "[a-z]" "[A-Z]"`
fi
mv -f "`basename ${2}`" "${base}" > /dev/null 2>&1
for entry in `find ${base}`
do
before="."
for after in `echo "${entry}" | sed -e 's,/, ,g'`
do
tmp_entry="${before}/${after}"
if [ "${1}" = "-l" ] ; then
before=`echo "${tmp_entry}" | tr "[A-Z]" "[a-z]"`
else
before=`echo "${tmp_entry}" | tr "[a-z]" "[A-Z]"`
fi
mv -f "${tmp_entry}" "${before}"
done
done
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