$ whois nixcraft.com | egrep -i 'Expiration|Expires on'
Output:

 Expiration Date: 10-may-2009
NOTICE: The expiration date displayed in this record is the date the
currently set to expire. This date does not necessarily reflect the expiration
view the registrar's reported date of expiration for this registration.
      Expires on: 10-May-09

Here is my script:

#!/bin/bash
# Domain name list - add your domainname here
DOM="theos.in cricketnow.in nixcraft.com nixcraft.org nixcraft.biz nixcraft.net nixcraft.info cyberciti.biz cyberciti.org gite.in nixcraft.in"
for d in $DOM
do
  echo -n "$d - "
  whois $d | egrep -i 'Expiration|Expires on' | head -1
  # If you need list..
  # whois $d | egrep -i 'Expiration|Expires on' | head -1 >> /tmp/domain.date
  #
  echo ""
done
#
# [ -f /tmp/domain.date ] && mail -s 'Domain renew / expiration date' you@yahoo.com < /tmp/domain.date || :
#

Output:

theos.in - Expiration Date:28-Oct-2007 13:01:58 UTC

cricketnow.in - Expiration Date:29-Jul-2008 09:17:56 UTC

nixcraft.com -    Expiration Date: 10-may-2009

nixcraft.org - Expiration Date:13-Aug-2007 14:58:30 UTC

nixcraft.biz - Domain Expiration Date:                      Fri Jun 01 23:59:59 GMT 2007

nixcraft.net -    Expiration Date: 11-dec-2007

nixcraft.info - Expiration Date:26-Jun-2007 11:05:13 UTC

cyberciti.biz - Domain Expiration Date:                      Tue Jun 30 23:59:59 GMT 2009

cyberciti.org - Expiration Date:25-May-2007 11:20:40 UTC

gite.in - Expiration Date:14-Sep-2007 06:47:36 UTC

nixcraft.in - Expiration Date:02-Feb-2008 05:33:08 UTC

When Postfix does not receive or deliver mail, the first order of business is to look for errors that prevent Postfix from working properly:

% egrep '(warning|error|fatal|panic):' /some/log/file | more

Note: the most important message is near the BEGINNING of the output. Error messages that come later are less useful.

The nature of each problem is indicated as follows:

• “panic” indicates a problem in the software itself that only a programmer can fix. Postfix cannot proceed until this is fixed.
• “fatal” is the result of missing files, incorrect permissions, incorrect configuration file settings that you can fix. Postfix cannot proceed until this is fixed.
• “error” reports an error condition. For safety reasons, a Postfix process will terminate when more than 13 of these happen.
• “warning” indicates a non-fatal error. These are problems that you may not be able to fix (such as a broken DNS server elsewhere on the network) but may also indicate local configuration errors that could become a problem later.

Here’s an example of a directory tree they create:

2006
  2006-10
       IMG_48324.JPG
       IMG_48325.JPG
       IMG_48326.JPG
       IMG_48331.JPG
       IMG_48333.JPG
       IMG_48334.JPG
       IMG_48337.JPG
  2006-11
       IMG_48338.JPG
  ...etc...

move-digiphotos
This bash script (move-digifotos) scans EXIF tags from .JPG files in current directory with metacam, creates necessary directories under $BASEDIR and moves the files in them:

#!/bin/bash

# Reads EXIF creation date from all .JPG files in the
# current directory and moves them carefully under
#
#   $BASEDIR/YYYY/YYYY-MM/YYYY-MM-DD/
#
# ...where 'carefully' means that it does not overwrite
# differing files if they already exist and will not delete
# the original file if copying fails for some reason.
#
# It DOES overwrite identical files in the destination directory
# with the ones in current, however.
#
# This script was originally written and put into
# Public Domain by Jarno Elonen ; in June 2003.
# Feel free to do whatever you like with it.

BASEDIR=/home/backup/test

find -maxdepth 1 -name "*.JPG" | while read x; do
DATE=`exiftags "$x" | \
   egrep "^[ t]*Image Created:" | \
   sed -r "s/Image Created: ([0-9:]*).*/\1/"`
if [ ! -z "$DATE" ];
then
    YEAR=`echo $DATE | sed -r "s/([0-9]*):([0-9]*):([0-9]*)/\\1/"`
    MONTH=`echo $DATE | sed -r "s/([0-9]*):([0-9]*):([0-9]*)/\\2/"`
    if [ "$YEAR" -gt 0 ] & [ "$MONTH" -gt 0 ]
    then
    INSTDIR=${BASEDIR}/${YEAR}/${YEAR}-${MONTH}
    install -d "$INSTDIR"
    INSTFILE="$INSTDIR/$x"
    if [ -e "$INSTFILE" ] && ! cmp -s "$x" "$INSTFILE"
    then
        echo "WARNING: '$INSTFILE' exists already and is different from '$x'."
    else
        echo "Moving '$x'"
        cp -ax "$x" "$INSTFILE"
        if ! cmp -s "$x" "$INSTFILE"
        then
        echo "WARNING: copying failed somehow, will not delete original '$x'"
        else
        rm -f "$x"
        fi
    fi
    else
    echo "WARNING: '$x' doesn't contain date."
    fi
else
    echo "WARNING: '$x' doesn't contain date."
fi
done

Here’s an example of a directory tree they create:

1999
  1999-07
     1999-07-14
       IMG_48324.JPG
       IMG_48325.JPG
       IMG_48326.JPG
     1999-07-17
       IMG_48331.JPG
       IMG_48333.JPG
       IMG_48334.JPG
       IMG_48337.JPG
  ...etc...

move-digiphotos
This bash script (move-digifotos) scans EXIF tags from .JPG files in current directory with metacam, creates necessary directories under $BASEDIR and moves the files in them:

#!/bin/bash

# Reads EXIF creation date from all .JPG files in the
# current direcotry and moves them carefully under
#
#   $BASEDIR/YYYY/YYYY-MM/YYYY-MM-DD/
#
# ...where 'carefully' means that it does not overwrite
# differing files if they already exist and will not delete
# the original file if copying fails for some reason.
#
# It DOES overwrite identical files in the destination directory
# with the ones in current, however.
#
# This script was originally written and put into
# Public Domain by Jarno Elonen  in June 2003.
# Feel free to do whatever you like with it.

  BASEDIR=/home/jarno/gfx

find -maxdepth 1 -name "*.JPG" | while read x; do
  DATE=`metacam "$x" | \
    egrep "^[ \t]*Image Capture Date:" | \
    sed -r "s/Image Capture Date: ([0-9:]*).*/\1/"`
  if [ ! -z "$DATE" ];
  then
    YEAR=`echo $DATE | sed -r "s/([0-9]*):([0-9]*):([0-9]*)/\\1/"`
    MONTH=`echo $DATE | sed -r "s/([0-9]*):([0-9]*):([0-9]*)/\\2/"`
    DAY=`echo $DATE | sed -r "s/([0-9]*):([0-9]*):([0-9]*)/\\3/"`
    if [ "$YEAR" -gt 0 ] & [ "$MONTH" -gt 0 ] & [ "$DAY" -gt 0 ]
    then
      INSTDIR=${BASEDIR}/${YEAR}/${YEAR}-${MONTH}/${YEAR}-${MONTH}-${DAY}
      install -d "$INSTDIR"
      INSTFILE="$INSTDIR/$x"
      if [ -e "$INSTFILE" ] && ! cmp -s "$x" "$INSTFILE"
      then
        echo "WARNING: '$INSTFILE' exists already and is different from '$x'."
      else
        echo "Moving '$x'"
        cp "$x" "$INSTFILE"
        if ! cmp -s "$x" "$INSTFILE"
        then
          echo "WARNING: copying failed somehow, will not delete original '$x'"
        else
          rm -f "$x"
        fi
      fi
    else
      echo "WARNING: '$x' doesn't contain date."
    fi
  else
    echo "WARNING: '$x' doesn't contain date."
  fi
done

fetch-digiphotos
The fetch-digiphotos script fetches pictures from a camera through gphoto2 into a temporary directory under $TMPDIR, moves them with move-digiphotos and finally offers to delete them from the camera:

#!/bin/bash

# Downloads pictures from a digital camera using gphoto2,
# moves them with move-digiphotos.sh and optionally deletes
# them from the camera's memory.
#
# This script was originally written and put into
# Public Domain by Jarno Elonen  in June 2003.
# Feel free to do whatever you like with it.

TMPDIR=/home/jarno/gfx/tmp

if [ ! -d "$TMPDIR" ]; then
echo "*** Error: download directory '$TMPDIR' does not exist, aborting."
exit 1
fi
pushd "$TMPDIR" > /dev/null

gphoto2 -P
if [ $? != 0 ]; then
echo "*** error executing gphoto2, aborting."
popd > /dev/null
exit 1
fi

move-digiphotos

echo
echo -n "Delete pictures from camera? [y/N] "
read x
if [ $x == "y" ]; then
gphoto2 -D
fi
if [ $? != 0 ]; then
echo "Warning: error executing gphoto2."
popd > /dev/null
exit 1
fi

echo "Done."
popd > /dev/null

Kilde: Jarno Elonen, 2003-06-17