source /usr/local/lib/err
-pre="${0##*/}:"
+script_name="${BASH_SOURCE[0]}"
+script_name="${script_name##*/}"
+pre="${SSH_CLIENT:+$HOSTNAME} $script_name:"
m() { printf "$pre %s\n" "$*"; "$@"; }
e() { printf "$pre %s\n" "$*"; }
err() { echo "[$(date +'%Y-%m-%d %H:%M:%S%z')]: $0: $*" >&2; }