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config() {
NEW="$1"
OLD="$(dirname $NEW)/$(basename $NEW .new)"
# If there's no config file by that name, mv it over:
if [ ! -r $OLD ]; then
mv $NEW $OLD
elif [ "$(cat $OLD | md5sum)" = "$(cat $NEW | md5sum)" ]; then
# toss the redundant copy
rm $NEW
fi
# Otherwise, we leave the .new copy for the admin to consider...
}
config etc/fish/config.fish.new
# add Fish to /etc/shells
grep -qe '^/usr/bin/fish$' /etc/shells || echo '/usr/bin/fish' >> /etc/shells
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