diff and patch

root@test-desktop:/home/James/mypro/temp# more Makefile

ALL: test child

test: test.c

        gcc -Wall -o test test.c

child: child.c

        gcc -Wall -o child child.c

clean:

        -find ./ -name "test" -exec rm {} \;

        -find ./ -name "*~" -exec rm {} \;

root@test-desktop:/home/James/mypro/temp# cp Makefile makefile

root@test-desktop:/home/James/mypro/temp# cat >> makefile << EOF

> this is a test

> for diff

> and patch

> EOF

root@test-desktop:/home/James/mypro/temp# more makefile 

ALL: test child

test: test.c

        gcc -Wall -o test test.c

child: child.c

        gcc -Wall -o child child.c

clean:

        -find ./ -name "test" -exec rm {} \;

        -find ./ -name "*~" -exec rm {} \;this is a test

for diff

and patch

root@test-desktop:/home/James/mypro/temp# diff -uN Makefile makefile > makefile.patch

root@test-desktop:/home/James/mypro/temp# more makefile.patch 

--- Makefile    2012-06-13 11:53:59.983936223 +0800

+++ makefile    2012-07-17 17:36:30.868292187 +0800

@@ -5,4 +5,6 @@

        gcc -Wall -o child child.c

 clean:

        -find ./ -name "test" -exec rm {} \;

-       -find ./ -name "*~" -exec rm {} \;

\ 文件尾沒有 newline 字符

+       -find ./ -name "*~" -exec rm {} \;this is a test

+for diff

+and patch

root@test-desktop:/home/James/mypro/temp# patch -p0 makefile.patch 

^C

root@test-desktop:/home/James/mypro/temp# patch -p0 < makefile.patch 

patching file Makefile

root@test-desktop:/home/James/mypro/temp# more Makefile

ALL: test child

test: test.c

        gcc -Wall -o test test.c

child: child.c

        gcc -Wall -o child child.c

clean:

        -find ./ -name "test" -exec rm {} \;

        -find ./ -name "*~" -exec rm {} \;this is a test

for diff

and patch

root@test-desktop:/home/James/mypro/temp# patch -RE -p0 < makefile.patch 

patching file Makefile

root@test-desktop:/home/James/mypro/temp# more Makefile

ALL: test child

test: test.c

        gcc -Wall -o test test.c

child: child.c

        gcc -Wall -o child child.c

clean:

        -find ./ -name "test" -exec rm {} \;

        -find ./ -name "*~" -exec rm {} \;

root@test-desktop:/home/James/mypro/temp#