http://blog.chinaunix.net/uid-2282111-id-2113293.html
在linux/unix平台的经常使用scanf从键盘获取字符，输出字符后按Backspace键删除时，会出现^H，这对习惯了按Backspace键删除的用户来说，感觉非常别扭，虽然可以通过Ctrl+Backspace组合键实现删除功能
可通过stty命令修改终端配置来实现Backspace删除功能。如下：
QUOTE:
[oracle@RHEL5 ~]$ id
uid=501(oracle) gid=501(oinstall) groups=501(oinstall),502(dba),503(asadmin)
[oracle@RHEL5 ~]$ stty erase ^h
若要恢复Ctrl+Backspace组合键删除功能，可执行以下命令：
QUOTE:
[oracle@RHEL5 ~]$ id
uid=501(oracle) gid=501(oinstall) groups=501(oinstall),502(dba),503(asadmin)
[oracle@RHEL5 ~]$ stty erase ^?
同时可通过stty -a查看所有的终端设置：
QUOTE:
oracle||oralinux||/home/oracle||-->>id
uid=500(oracle) gid=501(oinstall) groups=500(dba),501(oinstall)
oracle||oralinux||/home/oracle||-->>stty -a
speed 38400 baud; rows 24; columns 80; line = 0;
intr = ^C; quit = ^; erase = ^H; kill = ^U; eof = ^D; eol = <undef>;
eol2 = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W;
lnext = ^V; flush = ^O; min = 1; time = 0;
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