Using diff & patch

• -N, –new-file – treat absent files as empty
• -a, –text – treat all files as text
• -u, -U NUM, –unified[=NUM] – output NUM (default 3) lines of unified context
• -r, –recursive – recursively compare any subdirectories found
• -p, –show-c-function – show which C function each change is in

Use diff to create patches,

diff -Naur

to ignore .git and alike hidden folders from the diff,

diff -rupN -x '.*' ./original ./new > original.patch

Ref. http://www.mugginsoft.com/content/diff-ignoring-hidden-files