asf_cleanup

#! /bin/sh
# asf_cleanup (Bourne shell script) -- Advanced Spam Filtering's post-learning cleanup script
# Moves a given user's learned spam to their "spam" folder
#
# Usage: asf_cleanup [-d] <username>
#
# Note: this script must be run as the user given as <username>
# The cron job that calls this script should redirect stdout to a WRITABLE log file
#
# Version: 1.1
# Requires: GNU mv, GNU xargs

self=${0##*/}
syslog_facility=mail
syslog_tag="$self[$$]"


# *** MAINLINE ***
# check for -d (the debug switch)
if [ x"$1" = x-d ] ; then
  shift
  log()
  {
    log_level=$1
    shift
    echo "$self($log_level): $*"
  }
else
  log()
  {
    log_level=$1
    shift
    logger -t $syslog_tag -p $syslog_facility.$log_level "$*"
  }
fi


if [ -n "$1" ] ; then
  username=$1
else
  echo "$self: no username supplied" >&2
  exit 1
fi

user_homedir=$(getent passwd $username | cut -d: -f6) 
if [ ! -d $user_homedir ] ; then
  echo "$self: invalid user '$username'" >&2
  exit 2
fi

if [ ! -d $user_homedir/Maildir/.learn-spam/cur ] ; then
  echo "$self: ~$username/Maildir/.learn-spam doesn't exist" >&2
  exit 3
fi
if [ ! -f $user_homedir/Maildir/.learn-spam/asf_learned ] ; then
  echo "$self: ~$username/Maildir/.learn-spam/asf_learned doesn't exist" >&2
  exit 4
fi

echo "$(date --rfc-3339=seconds)  $username (cleanup)"

# find all files in "learn-spam" that are older than the tag file and move it
# to "spam"
# (Uses GNU mv's --target-directory option to allow xargs to work in multi-file
# mode.)
find $user_homedir/Maildir/.learn-spam/cur -type f ! -newer $user_homedir/Maildir/.learn-spam/asf_learned | \
  xargs --no-run-if-empty mv -v --target-directory=$user_homedir/Maildir/.spam/cur
## xargs -I '{}' mv '{}' $user_homedir/Maildir/.spam/cur

echo