1、

s:进入某个函数
finish :从这个函数中出来

(gdb) b dkauth_mgr.c:132
Breakpoint 1 at 0x3423cfd4: file /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c, line 132.
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/jintao/NT3/nt3_image/vdc-target.elf 
[Switching to Thread 57005]Breakpoint 1, load_vehicle_info () at /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c:132
132	/home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c: No such file or directory.
(gdb) s
convert_hexStr_to_hexArray (buff=0x344eac70 <g_dkAuthMgr+28568> "", uBuffSize=16, pString=0x344eac80 <g_dkAuthMgr+28584> "a63c3c60aa634b561809527290001010", strLen=32)at /home/jintao/cvf-integration/apps/cvf/services/common-utils/src/common_utils.c:124
124	/home/jintao/cvf-integration/apps/cvf/services/common-utils/src/common_utils.c: No such file or directory.
(gdb) n
125	in /home/jintao/cvf-integration/apps/cvf/services/common-utils/src/common_utils.c
(gdb) n
126	in /home/jintao/cvf-integration/apps/cvf/services/common-utils/src/common_utils.c
(gdb) finish 
Run till exit from #0  convert_hexStr_to_hexArray (buff=0x344eac70 <g_dkAuthMgr+28568> "", uBuffSize=16, pString=0x344eac80 <g_dkAuthMgr+28584> "a63c3c60aa634b561809527290001010", strLen=32)at /home/jintao/cvf-integration/apps/cvf/services/common-utils/src/common_utils.c:126
0x3423cfdc in load_vehicle_info () at /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c:132
132	/home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c: No such file or directory.
Value returned is $16 = 0
(gdb) n
133	in /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c
(gdb) 

2、

skip 函数名：单步执行时不会进入到这个函数中执行

3、

skip file 文件名：单步调试时整个文件都会被跳过
skip -gfi common/*.c   单步调试时common目录下的所有.c文件都跳过

4、

格式： jump 行号或者函数名 ：一般是在当前函数内跳转

(gdb) b dkauth_mgr.c:130
Breakpoint 3 at 0x3423cfb4: file /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c, line 130.
(gdb) b dkauth_mgr.c:144
Breakpoint 4 at 0x3423d084: file /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c, line 144.
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/jintao/NT3/nt3_image/vdc-target.elf 
[Switching to Thread 57005]Breakpoint 3, load_vehicle_info () at /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c:130
130	in /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c
(gdb) p g_dkAuthMgr.preMaterials.vehicle_id_str
$2 = '\000' <repeats 31 times>
(gdb) set pr
print   prompt  
(gdb) set print 
address                asm-demangle           entry-values           max-symbolic-offset    pascal_static-members  repeats                symbol                 thread-events          vtbl
array                  demangle               frame-arguments        null-stop              pretty                 sevenbit-strings       symbol-filename        type                   
array-indexes          elements               inferior-events        object                 raw                    static-members         symbol-loading         union                  
(gdb) set print null-stop
(gdb) p g_dkAuthMgr.preMaterials.vehicle_id_str
$3 = ""
(gdb) jump dkauth_mgr.c:144
Continuing at 0x3423d084.Breakpoint 4, load_vehicle_info () at /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c:144
144	in /home/jintao/cvf-integration/apps/cvf/services/dkauth/src/dkauth_mgr.c
(gdb) p g_dkAuthMgr.preMaterials.vehicle_id_str
$4 = ""
(gdb)