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compor/bash_patch_between_files.sh

Created February 25, 2013 15:09
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create and apply a patch between files in two directories
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bash_patch_between_files.sh
# produces a patch between the files in the 2 dirs
# -c : special context for output
# -r : directory recursively
# -B : ignore blanks
diff -crB before_dir after_dir > foo.patch
# if you want to patch before_dir now
cd before_dir
# -p n : strip the smallest prefix containing n number of slashes
# you can do a dry run by adding --dry-run
# or use a backup of the file before it gets patched with -b
patch -p1 < ../foo.patch
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