1. attach: 用gdb調試一個正在運行中的進程
gdb <program> PID

2. br: 設置斷點
br filename:line_num

br namespace::classname::func_name

3. n: 單步跳過 s: 單步進入

4. finish：執行到函數retun返回

5. list: 列出當前位置之后的10行代碼；list line_number: 列出line_number之后的十行代碼

6. bt（backtrace）：列出調用棧

7. info locals：列出當前函數的局部變量

8. p var_：打印變量值

9. info breakpoints：列出所有斷點

10. delete breakpoints：刪除所有斷點；delete breakpoints id：刪除編號為id的斷點；disable/enable breakpoints id：禁用/啟用斷點

11. break ... if ... 條件中斷

  
    33  redraw
    34  dbget 0x2aad1379e170.name
    35  *DBU*Micron*
    36  dbDBUToMicrons 8456600
    37  dbDBUToMicrons 3742650
    38  selectNet mii1mdint_data_in
    39  redraw
    40  dbget 0x2aad1379e790.hInstTerms.pt
    41  dbget 0x2aad1379e790.hInstTerms.term.shape
    42  dbget 0x2aad1379e790.hInstTerms.pt "8456.6*"
    43  dbget 0x2aad1379e790.hInstTerms.pt 8456.6
    44  dbget 0x2aad1379e790.hInstTerms.name
    45  history
    46  dbGetNetByName mii1mdint_data_in
    47  dbget 0x2aab88b49530.hNets.hInstTerms.name
    48  addCustomBox aaa 8438.4 3742.6 8474.6 3763.4
    49  redraw
    50  dbGetHInstByName padring/pl_mii1mdint
    51  dbget 0x2aab88b49530.hNets.hTerms.hInst.name