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Creating patch file in Mac OS

30 Sep 2014 - 11:51 am

If you don't want to use VCS for creating patch then you can use diff tool. You can create patch for one file using

diff -u original.c new.c > original.patch

Or

diff -rupN original/ new/ > original.patch

For entire folder

Apply patch

If you are patching  from the root directory and use the -p0 parameter to patch. This will stop patch from asking you which file you wish to patch:

$ patch -p0 < example.patch

If your patch is patching files that mention a & b directories in the patch, you can use the -p1 parameter to get rid of the a/b directories.

$ patch -p1 < example.patch

To fix code style issues in the patch, you can use tab2space like so:

tab2space -unix -t2 foo.patch | patch -p0
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