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Full Discussion: Advise to print lines before and after patterh match and checking and removing duplicate files
Top Forums UNIX for Beginners Questions & Answers Advise to print lines before and after patterh match and checking and removing duplicate files Post 303046173 by newbie_01 on Sunday 26th of April 2020 10:58:51 PM
Old 04-26-2020
Hi Jim,


The grep works in Linux but not in Solaris. Sorry, forgot to mention, OS is SunOS <hostname> 5.11 11.3 sun4v sparc sun4v


Yeah, the code below works and files.tmp did has the list of files with their checksum, I only need to retain one of the files. Trying to work out how to sort the output AND retain just the lowest numbered file.



Code:
cd /path/to/logs

grep -l "CORRUPTION DETECTED" *.log  |
while read fname
do
   cksum $fname
done | sort -n -k1 > files.tmp
# files.tmp has a sorted list of files - by checksum




Code:
$: cat files.tmp
1237008222      10664   log.10
1237008222      10664   log.12
1237008222      10664   log.14
1237008222      10664   log.16
1237008222      10664   log.18
1237008222      10664   log.2
1237008222      10664   log.4
1237008222      10664   log.6
1237008222      10664   log.8
2296620157      10696   log.1
2296620157      10696   log.11
2296620157      10696   log.13
2296620157      10696   log.15
2296620157      10696   log.17
2296620157      10696   log.3
2296620157      10696   log.5
2296620157      10696   log.7
2296620157      10696   log.9


So from the list above, I will only want to retain log.1 and log.2, so kinda like group the output list above by checksum and retain the lowest number named file. Googling at the moment if there is an easier of deleting from the files.tmp list besides how am doing it below:


Code:
#!/bin/ksh
#

awk '{ print $1 }' files.tmp | sort | uniq > tmp.00

while read checksum
do
   grep "^$checksum" files.tmp | sort | sort -n -t. -k2 | awk 'NR>1 { print $3 }' | xargs rm
done < tmp.00


BTW, what is the code here below. I think there is something missing here, is oldfile supposedly the script that does the checksum and then I run the code below?



Code:
oldsum=0
oldfile
ls logfile* | 
while read sum size name
do
   if [  "$sum" -eq $oldsum ] ; then
      echo "$oldname and $name are duplicates"
      # put a rm command here after you see this work correctly for you
      # assuming you delete the second file name
      continue
   fi
   oldname=$name
   oldsum=$sum
done

 

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LEARN ABOUT DEBIAN

xfs_estimate

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

NAME

       xfs_estimate - estimate the space that an XFS filesystem will take

SYNOPSIS

       xfs_estimate [ -h? ] [ -b blocksize ] [ -i logsize ]
		    [ -e logsize ] [ -v ] directory ...

DESCRIPTION

       For  each directory argument, xfs_estimate estimates the space that directory would take if it were copied to an XFS filesystem.  xfs_esti-
       mate does not cross mount points.  The following definitions are used:
	      KB = *1024
	      MB = *1024*1024
	      GB = *1024*1024*1024

       The xfs_estimate options are:

       -b blocksize
	      Use blocksize instead of the default blocksize of 4096 bytes.  The modifier k can be used after the number to  indicate  multiplica-
	      tion by 1024.  For example,

		   xfs_estimate -b 64k /

	      requests an estimate of the space required by the directory / on an XFS filesystem using a blocksize of 64K (65536) bytes.

       -v     Display more information, formatted.

       -h     Display usage message.

       -?     Display usage message.

       -i, -e logsize
	      Use  logsize instead of the default log size of 1000 blocks.  -i refers to an internal log, while -e refers to an external log.  The
	      modifiers k or m can be used after the number to indicate multiplication by 1024 or 1048576, respectively.

	      For example,

		   xfs_estimate -i 1m /

	      requests an estimate of the space required by the directory / on an XFS filesystem using an internal log of 1 megabyte.

EXAMPLES

       % xfs_estimate -e 10m /var/tmp
       /var/tmp will take about 4.2 megabytes
	       with the external log using 2560 blocks or about 10.0 megabytes

       % xfs_estimate -v -e 10m /var/tmp
       directory		     bsize   blocks    megabytes    logsize
       /var/tmp 		      4096	792	   4.0MB   10485760

       % xfs_estimate -v /var/tmp
       directory		     bsize   blocks    megabytes    logsize
       /var/tmp 		      4096     3352	  14.0MB   10485760

       % xfs_estimate /var/tmp
       /var/tmp will take about 14.0 megabytes

																   xfs_estimate(8)
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