(gdb) 
100^done
(gdb) 
&"file exe\n"
~"Using host libthread_db library \"/lib/libthread_db.so.1\".\n"
^done
(gdb) 
200^done,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x08048363",func="f11",file="newtest.c",line="6",times="0"}
(gdb) 
&"run\n"
^done,reason="breakpoint-hit",bkptno="1",thread-id="0",frame={addr="0x08048363",func="f11",args=[{name="b",value="1"}],file="newtest.c",line="6"}
(gdb) 
300^done,name="var1",numchild="0",type="int"
(gdb) 
301^done,name="var2",numchild="0",type="int"
(gdb) 
302^done,value="2"
(gdb) 
303^done,value="1"
(gdb) 
400^running
(gdb) 
400*stopped,reason="breakpoint-hit",bkptno="1",thread-id="0",frame={addr="0x08048363",func="f11",args=[{name="b",value="2"}],file="newtest.c",line="6"}
(gdb) 
500^done,changelist=[{name="var1",in_scope="true",type_changed="false"}]
(gdb) 
501^done,changelist=[{name="var2",in_scope="true",type_changed="false"}]
(gdb) 
502^done,value="3"
(gdb) 
503^done,value="2"
(gdb) 
&"kill\n"
^done
(gdb) 
&"quit\n"