set -eE -o pipefail
trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
-[[ $EUID == 0 ]] || exec sudo "$BASH_SOURCE" "$@"
-
-if test -e /q/root/.ssh; then
- dest=/q/root/.ssh
- /a/exe/lnf $dest /root
-else
- dest=/root/.ssh
- mkdir -p $dest
- chmod 700 $dest
+[[ $EUID == 0 ]] || exec sudo -E "${BASH_SOURCE[0]}" "$@"
+
+dest=/root/.ssh
+
+# leftover
+if [[ -L $dest ]]; then
+ rm $dest
fi
+mkdir -p $dest
+chmod 700 $dest
user_ssh_dir=$(eval echo ~${SUDO_USER:-$USER})/.ssh