What is a good method for using diff to show a percentage difference between two files?
Such as if a file has 100 lines and a copy has 15 lines that have been changed the diff-percent would be 15%.
+1
A:
Something like this perhaps?
Two files, A1 and A2.
$ sdiff -B -b -s A1 A2 | wc would give you how many lines differed. wc gives total, just divide.
The -b and -B are to ignore blanks and blank lines, and -s says to suppress the common lines.
MJB
2010-04-27 16:30:35
from man file of wc: newlines, words, and bytes.you divide the first number in the output by the number of lines in the file are you comparing. wc -l, gives you only number of lines and can be added to the command above. -- Response to AlligatorJack
cdated
2010-06-14 14:42:07
@cdated : thanks for clarifying. I did not see the question/response of course until you commented.
MJB
2010-06-14 15:01:05
A:
Hello. I just tried the line postet by MKB (sdiff -B - b - s A1 A2 | wc) and I get three numbers as a result:
51, 436 and 3133 (in this order)
what do they mean? Which is which? Thanks! :)
AlligatorJack
2010-06-14 11:55:37
this should probably be in MJB answer's comment. I placed my explanation there.
cdated
2010-06-14 14:43:01