- debianlist="${target}/etc/apt/sources.list.d/debian.list"
- perl -pi -e 's#(deb.* )(.*://.*?)( .*)$#$1http://snapshot.debian.org/archive/debian/'$(date +%Y%m%d)'/$3#' ${debianlist}
+ perl -pi -e 'BEGIN { $d="'$(date +%Y%m%d)'"; } s#^(\s+)(deb.* )(.*://cdn.*?)(
+ .*)$#$1$2http://snapshot.debian.org/archive/debian/$d/$4#' \
+ "${target}/etc/apt/sources.list.d/debian.list"