Checks for invalid/obsolete entries in Gentoo Portage's world file

check-world

#!/bin/bash
#
# Author: Gary Macindoe
# Date: May 2015

WORLD_FILE=/var/lib/portage/world

while read package;
  do
  DEPS=$(grep -l ${package} /var/db/pkg/*/*/{,R}DEPEND | cut -d'/' -f5,6 | sort -u);
  if [ "${DEPS}" ] && [[ "${DEPS}" != "${package}"-* ]];
    then
    echo -e "\E[1;31;40m${package}\E[0m"
    echo "${DEPS}" | while read dep
      do
      echo "  ${dep}"
    done
  else
    echo -e "\E[1;32;40m${package}\E[0m"
  fi
done < ${WORLD_FILE}