03-17-2008
You can try this shell script
rm -f fileout
i=1
while read line
do
if [[ $i -eq 1 ]]
then
echo $line >>fileout
i=0
continue
fi
if [[ $i -eq 0 ]]
then
i=$((i+1))
continue
fi
done<$filename
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LEARN ABOUT DEBIAN
recoverdm
RECOVERDM(1) General Commands Manual RECOVERDM(1)
NAME
recoverdm - recover filesdisks with damaged sectors
SYNOPSIS
recoverdm -t type -i filedevicein -o fileout [-l list] [-n retries] [-s speed]
DESCRIPTION
recoverdm This program will help you recover disks with bad sectors. You can recover files as well complete devices. In case if finds sec-
tors which simply cannot be recoverd, it writes an empty sector to the output file and continues. If you're recovering a CD or a DVD and
the program cannot read the sector in "normal mode", then the program will try to read the sector in "RAW mode" (without error-checking
etc.). This toolkit also has a utility called 'mergebad': mergebad merges multiple images into one. This can be useful when you have, for
example, multiple CD's with the same data which are all damaged. In such case, you can then first use recoverdm to retrieve the data from
the damaged CD's into image-files and then combine them into one image with mergebad.
OPTIONS
-t type
is 1 for files, 10 for floppy disks and 40 for IDE disks (try -h for a complete list)
-i filedevicein
is the device or file you want to recover.
-o fileout
is the file where to write to. This file should not already exists.
-l list
This file will contain the offsets of the bad blocks as well as the size of the bad blocks. This file can be used together with the
image with the mergebad utility.
-n retries
Number of retries before going on with next sector, defaults to 6.
-r RAW read
Number of retries while reading in RAW mode before going on with next sector, default to 6.
-s rotation speed
Speed of the CD-ROMDVD, defaults to 1.
-h Gives the help message.
SEE ALSO
gddrescue(1), dd_rescue(1), testdisk(1), gpart(1)
AUTHOR
Folkert van Heusden <flok@xs4all.nl>,
Home page is <http://www.vanheusden.com/recoverdm/>
recoverdm Version 0.19 RECOVERDM(1)