#!/bin/sh
U=$(sed -n 's#.*preseed/url=\([^ ]*\).*#\1#p' /proc/cmdline)
echo "== preseed apt段 =="
wget -qO- "$U" | grep -iE 'use_mirror|services-select|pkgsel/include|tasksel/first'
echo "== 失败的文件/原因 =="
grep -iE 'apt-setup|choose-mirror|security|fail|404|error|Retriev|Err:|Get:' /var/log/syslog | tail -25