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Full Discussion: Script to compare files recursively using sdiff
Top Forums Shell Programming and Scripting Script to compare files recursively using sdiff Post 302790635 by hanson44 on Saturday 6th of April 2013 05:40:19 AM
Old 04-06-2013
You stated it pretty clearly. It's just rather complex and tedious.

Here's a working version that does basically what you want, as best I can understand. It does not put the results in each directory, but all together in one file. Putting the results in different directories would complicate the script, and it seems having one results file might be easier to use? I think you could modify the script to add other details as needed. I think the script is pretty clear. It uses simple commands, but is just kind of tedious. Let me know if any questions.
Code:
$ cd /tmp
$ ls -R oldfiles newfiles
newfiles:
subdirA  subdirB

newfiles/subdirA:
subA.txt

newfiles/subdirB:
subB.txt

oldfiles:
subdirA  subdirB  subdirC

oldfiles/subdirA:
subA.txt

oldfiles/subdirB:
subB.txt

oldfiles/subdirC:
subC.txt

Code:
$ cat sdiff.sh
# cmp_dir - program to compare two directories

if [ $# -ne 2 ]; then
  echo "usage: $0 old_dir new_dir" 1>&2; exit 1
fi

if [ ! -d "$1" ]; then
  echo "$1 is not a directory!" 1>&2; exit 1
fi

if [ ! -d "$2" ]; then
  echo "$2 is not a directory!" 1>&2; exit 1
fi

rm -f resultfile.txt
missing=0
old_dir="$1" new_dir="$2"
find "$old_dir" -name '*.txt' -print > /tmp/old_paths.x;
while read old_path; do
  echo "old_path = $old_path" >> resultfile.txt
  filename=`basename "$old_path"`
  find "$new_dir" -name "$filename" -print > /tmp/new_path.x
  count=`cat /tmp/new_path.x | wc -l`
  if [ $count -eq 1 ]; then
    new_path=`cat /tmp/new_path.x`
    echo "Comparison with $new_path:" >> resultfile.txt
    sdiff $old_path $new_path >> resultfile.txt
  elif [ $count -gt 1 ]; then
    echo "ERROR: $count found under $new_dir" >> resultfile.txt
  else
    echo "ERROR: does not exist under $new_dir" >> resultfile.txt
    missing=`expr $missing + 1`
  fi
  echo "------------------" >> resultfile.txt
done < /tmp/old_paths.x
echo "Missing: $missing" >> resultfile.txt
echo "File comparision done, please see resultfile.txt"
# echo -n "Press ENTER: "; read; vi resultfile.txt

Code:
$ ./sdiff.sh oldfiles newfiles
File comparision done, please see resultfile.txt

Code:
$ cat resultfile.txt
old_path = oldfiles/subdirB/subB.txt
Comparison with newfiles/subdirB/subB.txt:
Sat Apr  6 01:45:32 PDT 2013                                  | Sat Apr  6 01:44:56 PDT 2013
------------------
old_path = oldfiles/subdirC/subC.txt
ERROR: does not exist under newfiles
------------------
old_path = oldfiles/subdirA/subA.txt
Comparison with newfiles/subdirA/subA.txt:
Sat Apr  6 01:44:36 PDT 2013                                  | Sat Apr  6 01:44:49 PDT 2013
------------------
Missing: 1

 

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LEARN ABOUT CENTOS

gensprep

gensprep(8)							 ICU 50.1.2 Manual						       gensprep(8)

NAME

       gensprep - compile StringPrep data from files filtered by filterRFC3454.pl

SYNOPSIS

       gensprep [ -h, -?, --help ] [ -v, --verbose ] [ -c, --copyright ] [ -s, --sourcedir source ] [ -d, --destdir destination ]

DESCRIPTION

       gensprep reads filtered RFC 3454 files and compiles their information into a binary form.  The resulting file, <name>.icu, can then be read
       directly by ICU, or used by pkgdata(8) for incorporation into a larger archive or library.

       The files read by gensprep are described in the FILES section.

OPTIONS

       -h, -?, --help
	      Print help about usage and exit.

       -v, --verbose
	      Display extra informative messages during execution.

       -c, --copyright
	      Include a copyright notice into the binary data.

       -s, --sourcedir source
	      Set the source directory to source.  The default source directory is specified by the environment variable ICU_DATA.

       -d, --destdir destination
	      Set the destination directory to destination.  The default destination directory is specified by the environment variable ICU_DATA.

ENVIRONMENT

       ICU_DATA  Specifies the directory containing ICU data. Defaults to /usr/share/icu/50.1.2/.  Some tools in ICU depend on the presence of the
		 trailing slash. It is thus important to make sure that it is present if ICU_DATA is set.

FILES

       The  following files are read by gensprep and are looked for in the source /misc for rfc3454_*.txt files and in source /unidata for Normal-
       izationCorrections.txt.

       rfc3453_A_1.txt	   Contains the list of unassigned codepoints in Unicode version 3.2.0....

       rfc3454_B_1.txt	   Contains the list of code points that are commonly mapped to nothing....

       rfc3454_B_2.txt	   Contains the list of mappings for casefolding of  code points when Normalization form NFKC is specified....

       rfc3454_C_X.txt	   Contains the list of code points that are prohibited for IDNA.

       NormalizationCorrections.txt
			   Contains the list of code points whose normalization has changed since Unicode Version 3.2.0.

VERSION

       50.1.2

COPYRIGHT

       Copyright (C) 2000-2002 IBM, Inc. and others.

SEE ALSO

       pkgdata(8)

ICU MANPAGE
							   18 March 2003						       gensprep(8)
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