/var/log/auth.log \
/var/log/auth.log.1 \
| sort -n -k 1 \
- | bar_gauge -v width=$(stty size | awk '{print $2}') -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
+ | bar_gauge -v width="$(stty size | awk '{print $2}')" -v num=1 -v ch_right=' ' -v ch_left=' ' -v ch_blank=' ' \
| column -t
}