Linux下patch打补丁命令

1.作用

　　此命令用于为特定软件包打补丁，他使用diff命令对源文件进行操作。

2.用法

　　$patch [-R] {-p(n)} [--dry-run] < patch_file_name

• p：为path的缩写。
• n：指将patch文件中的path第n条’/’及其左边部分取消。
• -R：卸载patch包。还原到打patch之前。
• --dry-run：尝试patch软件，并不真正修改软件。

3.示例

• 用文本工具打开patch文件，如sensor.patch，它的后缀可能不是.patch

Index: android/vendor/qcom/proprietary/sensors/dsps/sensordaemon/common/inc/sns_reg_common.h
===================================================================
--- android/vendor/qcom/proprietary/sensors/dsps/sensordaemon/common/inc/sns_reg_common.h    (revision 31573)
+++ android/vendor/qcom/proprietary/sensors/dsps/sensordaemon/common/inc/sns_reg_common.h    (revision 31670)
@@ -1376,6 +1376,10 @@
   {0x20,0x45,0x83,0xd2,0x26,0xa4,0x41,0xc4,0xa2,0x54,0x15,0xbc,0xe1,0x29,0x36,0x31}
 #define SNS_REG_UUID_BMA250 \
   {0xf3,0x7a,0x60,0xdf,0x0c,0x82,0x4a,0xc7,0xba,0xd7,0x98,0x94,0x5e,0x58,0x21,0x8a}
+#define SNS_REG_UUID_BMM050 \
+  {0xa0,0xd3,0x35,0xb2,0x16,0xa9,0x44,0xbf,0x94,0x51,0xaa,0xb1,0xd7,0x3f,0x1f,0x88}
 #define SNS_REG_UUID_LIS3DH \
   {0x14,0xb6,0xfa,0xeb,0xe0,0x28,0x4b,0x3a,0xbf,0xff,0x7d,0x04,0xf5,0x75,0xac,0x14}
 #define SNS_REG_UUID_LIS3DSH \
@@ -1418,8 +1422,6 @@
   {0x1c,0xc8,0xd8,0x96,0x0f,0x75,0x40,0x5b,0xa0,0x00,0x31,0x1e,0x0d,0x27,0x3e,0xe9}
 #define SNS_REG_UUID_BMG160 \
   {0x45,0x03,0xe9,0x5b,0x57,0xc5,0x47,0xc3,0x8d,0x49,0x90,0xe9,0xbe,0xf9,0xb3,0xc0}
-#define SNS_REG_UUID_BMM050 \
-  {0xbc,0xfd,0xbf,0x4d,0xa5,0x5d,0x42,0x8c,0xa6,0x0a,0x97,0xbf,0x6b,0xc0,0x1b,0x29}
 #define SNS_REG_UUID_GYRO_EWTZNA \
   {0x33,0xb9,0x0e,0x55,0xd1,0xb3,0x43,0x71,0x93,0xc1,0xc9,0x5b,0x6a,0x26,0xc8,0x1d}
 #define SNS_REG_UUID_BMA2X2 \
Index: android/vendor/qcom/proprietary/sensors/dsps/reg_defaults/sensor_def_qcomdev.conf
===================================================================
--- android/vendor/qcom/proprietary/sensors/dsps/reg_defaults/sensor_def_qcomdev.conf    (revision 31573)
+++ android/vendor/qcom/proprietary/sensors/dsps/reg_defaults/sensor_def_qcomdev.conf    (revision 31670)
......

• 把sensor.patch放在与android同级目录下

　　　　

• 运行patch命令打补丁，-Ｒ参数可以还原。

  $patch -p0 < sensor.path

• $patch -p0 -R < sensor.path

• 如有冲突，解决它。