modules/debian-org/files/check_for_updates

   1 #!/bin/bash
   2
   3 parse_dates () {
   4         while read url file junk; do
   5                 url=$(echo $url | sed -e "s/'//g")
   6                 url_time=$(date -d "$(curl -sqI ${url} | grep Last-Modified: | sed -e 's/Last-Modified: //')" +%s)
   7                 if [ ! -f "/var/lib/apt/lists/${file}" ]; then
   8                         return 0
   9                 fi
  10                 file_time=$(stat -c %Y /var/lib/apt/lists/${file})
  11                 if [ $url_time -gt $file_time ]; then
  12                         return 0
  13                 fi
  14         done
  15         return 1
  16 }
  17
  18 su nobody -c 'apt-get update -s --print-uris' | grep 'Release ' | parse_dates
  19 exit $?