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Top Forums Shell Programming and Scripting how to compare two VCE files? Post 302430181 by rdcwayx on Wednesday 16th of June 2010 10:42:56 PM
Old 06-16-2010
Thank you, I follow your idea to create the questions files by below commands:

Code:
awk '/^QUESTION/ {a=$2;$2=""} {print > "VCE1-" a ".txt"}' VCE1.txt
awk '/^QUESTION/ {a=$2;$2=""} {print > "VCE2-" a ".txt"}' VCE2.txt

then get the checksum number.

Code:
ls VCE1*.txt |xargs md5sum |sort -n > VCE1-md5sum
ls VCE2*.txt |xargs md5sum |sort -n > VCE2-md5sum

Here is the format of md5sum list.

Code:
$ cat VCE1-md5sum
00bd766865d17c3e243c6784d6b37668 *VCE1-181.txt
0c344ffe57b2422bf0440dd27999052e *VCE1-251.txt
0c9892860724147297f7ecc161221e2d *VCE1-172.txt
0d9a7baa0f12d23172530f692ea0d04c *VCE1-228.txt
0db692b1bf295bb09743768918e48822 *VCE1-147.txt
0e40994fdd199aed380acf4392d5f030 *VCE1-168.txt

Any one has better command to show the different between VCE1-md5sum and VCE2-md5sum

Here is my solution.

Show different questions:
Code:
awk '{a[$1]++} END {for (i in a) {if (a[i]==1) print i}}' VCE*md5sum |xargs -i grep {}  VCE*md5sum

Show same questions:
Code:
awk '{a[$1]++} END {for (i in a) {if (a[i]==2) print i}}' VCE*md5sum |xargs -i grep {}  VCE*md5sum


Last edited by rdcwayx; 06-17-2010 at 12:02 AM..
 

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FRAGISO(8)						      System Manager's Manual							FRAGISO(8)

NAME
fragiso - split rpm packages from an iso and reassemble the iso later on SYNOPSIS
fragiso make iso fiso fragiso list fiso fragiso fill [-m] fiso iso DESCRIPTION
fragiso can be used to convert an iso file into a fragment file, which is a list describing all of the rpms on the iso and a data chunk containing everything but the rpms. It is used by drpmsync when an iso needs to be transferred. The idea is that often the rpms on the iso are already available on the destination host, so it saves bandwidth to first transfer the fragmented iso, copy the locally available rpms, transfer the unavailable rpms and reassemble the iso file. fragiso make converts the iso into the fragment iso, fragiso list can be used to extract the rpm information. This information consists of the offset and length of all rpms and the lead/signature header md5sum plus the header/payload md5sum. To reassemble the iso one has to copy the rpms at the right offset into a new file and then use fragiso fill later on to provide all data not contained in the rpms. The -m option tells fragiso to print the resulting md5sum of the iso to stdout. It can be used for verification purposes. SEE ALSO
drpmsync(8) AUTHOR
Michael Schroeder <mls@suse.de> Mar 2007 FRAGISO(8)
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