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# Backup the old copy if we find one, move the new one in place
if [ -f bin/ksh ]; then
mv bin/ksh bin/ksh.old
fi
mv bin/ksh.new bin/ksh
if [ -f bin/ksh.old ]; then
rm -f bin/ksh.old
fi
# Add entries to /etc/shells if we need them
if [ ! -r etc/shells ] ; then
touch etc/shells
chmod 644 etc/shells
fi
if ! grep -q "/bin/ksh" etc/shells ; then
echo "/bin/ksh" >> etc/shells
fi
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