diff and patch

1.at same level use diff -urp 1 2
2.use to skip diff -urp 1 2 -X >d.patch
3.http://www.gnu.org/software/diffutils/manual/html_mono/diff.html#Hunks
4.use komapare to show the diffs in ui form
4.add scribd link to blogger
5.add google docs to blogger
6.diff -Naur -X myfile
myfile
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check Docs/difftest.zip