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# 1  
Old 10-16-2013
Help with diff output
I am running diff between two directories dir1 and dir2.

diff --exclude --recursive --brief -b dir1 dir2

The output of the above command is

Code:
Files dir1/java/abc/bcd/abc9991.java and dir2/java/abc/bcd/abc9991.java differ
Files dir1/java/abc/bcd/abc9933.java and dir2/java/abc/bcd/abc9933.java differ
Only in dir2/ora/dpc: g025_abc.dpc
Only in dir2/ora/dpc: gc_cvb_jrp_1650_abc.dpc
Only in dir2/ora/dpc: gc_k_jrp_502901690_abc.dpc
Files dir1/ora/ps/abc_bcda640921_bcd.sp and dir2/ora/ps/abc_bcda640921_bcd.sp differ
Files dir1/ora/ps/cvg_fgh640931_drv_msd.sp and dir2/ora/sp/cvg_fgh640931_drv_msd.sp differ


Want to extract file names from the diff output based on file extensions(have over 6 extensions in the subdirectories .java,.dpc,.cvg, and so on)

and delete all the files in dir2 except these in the diff output.


example: from the above diff output I want to extract files
Code:
abc9991.java
gc_cvb_jrp_1650_abc.dpc
gc_k_jrp_502901690_abc.dpc
abc_bcda640921_bcd.sp
cvg_fgh640931_drv_msd.sp   from dir2 and delete rest of the files from dir2.

Tried using the cut command but too many sub directories inside and each time the position has to change.
Last edited by Scott; 10-17-2013 at 12:36 PM.. Reason: More code tags
# 2  
Old 10-16-2013
Why are abc9933.java and g025_abc.dpc excluded?
# 3  
Old 10-16-2013
example: from the above diff output I want to extract files

Code:
abc9991.java
abc9933.java
g025_abc.dpc
gc_cvb_jrp_1650_abc.dpc
gc_k_jrp_502901690_abc.dpc
abc_bcda640921_bcd.sp
cvg_fgh640931_drv_msd.sp

from dir2 and delete rest of the files.
.

---------- Post updated at 04:35 PM ---------- Previous update was at 04:34 PM ----------

@CarloM: My bad I missed them
# 4  
Old 10-16-2013
The aim being to delete duplicate files from dir2 and sub-directories?
# 5  
Old 10-16-2013
Correct. I only need newer and changed files in dir2.
# 6  
Old 10-16-2013
If your diff supports -s (report identical files):
Code:
diff -s --exclude --recursive --brief -b dir1 dir2 | awk '/identical$/ {print $4}' | xargs echo rm

echo is just for error checking, remove it if the output looks right.

EDIT: If not then you could do something a bit more complicated:
Code:
diff <(diff --exclude --recursive --brief -b dir1 dir2 | awk '/^Only/ {printf "%s/%s\n", $3, $5} /differ$/ {print $4}' FS=" |:" | sort) <(find dir2 -type f|sort) | awk '{print $2}' | xargs echo rm

Last edited by CarloM; 10-16-2013 at 06:24 PM..
# 7  
Old 10-17-2013
Tried this initially. Did not work. The output was rm.

Code:
diff -s --exclude --recursive --brief -b dir1 dir2 | awk '/identical$/ {print $4}' | xargs echo rm

Then tried this it showed everything in dir2 as different and when I put the rm command at the end it deleted all the files in dir2.

Code:
diff <(diff --exclude --recursive --brief -b dir1 dir2 | awk '/^Only/ {printf "%s/%s\n", $3, $5} /differ$/ {print $4}' FS=" |:" | sort) <(find dir2 -type f|sort) | awk '{print $2}' | xargs echo rm
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