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Top Forums Shell Programming and Scripting Search and compare files from two paths Post 302786555 by DGPickett on Wednesday 27th of March 2013 05:35:04 PM
Old 03-27-2013
Seems like deja vu. Compare the file lists of the two directories, and the file content, using something like this:
Code:
diff -U0 <(
  cd head1
  find * -type f | sort | xargs -r cksum ) <(
  cd head2
  find * -type f | sort | xargs -r cksum ) | while read  diff_ind  cksum  sz  path
do
 case "$diff_ind" in
 (-)
  echo "Deleted file '$path'."
  ;;
 (+)
  echo "New file '$path':"
  cat head2/$path
  ;;
 (*)
  echo "Changed file '$path':"
  sdiff head1/$path head2/$path
  ;;
 esac
done

For stricter delete/new checking, use 'comm' not 'diff -U0' but no '| xargs -r cksum' until later, when you know both are present (no tab prefix is delete, one tab is new, two tabs is both). You can report new/delete on stderr and pipe others to stdout to cksum to another while read to compare cksums before running an sdiff.

Last edited by DGPickett; 03-27-2013 at 06:41 PM..
 

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DIFF(1) 						      General Commands Manual							   DIFF(1)

NAME
diff - print differences between two files SYNOPSIS
diff [-c | -e | -C n] [-br]file1 file2 OPTIONS
-C n Produce output that contains n lines of context -b Ignore white space when comparing -c Produce output that contains three lines of context -e Produce an ed-script to convert file1 into file2 -r Apply diff recursively to files and directories of EXAMPLES
diff file1 file2 # Print differences between 2 files diff -C 0 file1 file2 # Same as above diff -C 3 file1 file2 # Output three lines of context with every diff -c file1 file2 # Same diff /etc /dev # Compares recursively the directories /etc and /dev diff passwd /etc # Compares ./passwd to /etc/passwd DESCRIPTION
the same name, when file1 and file2 are both directories" difference encountered" Diff compares two files and generates a list of lines telling how the two files differ. Lines may not be longer than 128 characters. If the two arguments on the command line are both directories, diff recursively steps through all subdirectories comparing files of the same name. If a file name is found only in one directory, a diagnostic message is written to stdout. A file that is of either block special, character special or FIFO special type, cannot be compared to any other file. On the other hand, if there is one directory and one file given on the command line, diff tries to compare the file with the same name as file in the directory directory. SEE ALSO
cdiff(1), cmp(1), comm(1), patch(1). DIFF(1)
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