#!/bin/bash -e
[ -n "$1" ] || . usage 'server:file [len [file]]'
server=${1%%:*}
file_remote=${1#*:}
len=${2:-$[8*1024*1024]}
file_local=${3:-`basename "$file_remote"`}
scp-tail "$server:$file_remote" "$len" "$file_local"
rs "$server:'$file_remote'" "$file_local"