#!/bin/bash
# Script to search for unnecessary and duplicate useflags in your make.conf
# by c0nv1ct (c0nv1ct@inbox.com) 
# License: GPL
if [ -f chkflag.log ]
 then
  echo "Deleting old log file"
  rm chkflag.log
fi
if [ -f /usr/bin/eix ]
 then
  echo "Starting search, please wait, this may take a few minutes..."
  source /etc/make.conf
  for flag in `echo $USE`
   do
    chkdup=`echo $USE | grep -wo -e $flag | grep -c -e $flag`
    flag2=`echo $flag | sed -e 's/^-//'`
    if [ -f chkflag.log ] && [ `awk '{ print $1 }' chkflag.log | grep -c -e $flag` -gt 0 ]
     then echo "Skipping duplicate"
    elif [ "$flag" == livecd ]
     then echo "livecd should be removed" >> chkflag.log
    elif [ -z `eix -IU --only-names -- "$flag2" | head -1` ] && [ "$chkdup" -gt 1 ]
     then echo "$flag can be removed, all $chkdup instances of it" >> chkflag.log
    elif [ -z `eix -IU --only-names -- $flag2 | head -1` ]
     then echo "$flag can be removed" >> chkflag.log
    elif [ "$chkdup" -gt 1 ]
     then 
      echo "$flag has duplicates, `expr $chkdup - 1` instances can be removed" >> chkflag.log
    fi
  done
  echo "Search complete."
  if [ -f chkflag.log ]
   then
    less chkflag.log
   else
    echo "No problems found..."
  fi
  echo "All done"
 else
  echo "This script requires eix, please emerge it."
fi