Linux 下 SQLPLUS 中 退格 方向鍵問題
一. 退格鍵的問題
如果退格鍵不能用,可以使用stty命令來解決。該命令可以改變並列印終端行設定。
以前整理的Blog:
stty 命令
看這個命令的幫助:
[[email protected] ~]$ stty --help
Usage: stty [-F DEVICE] [--file=DEVICE] [SETTING]...
or:stty [-F DEVICE] [--file=DEVICE] [-a|--all]
or:stty [-F DEVICE] [--file=DEVICE] [-g|--save]
Print or change terminal characteristics.
-a, --allprint all current settings in human-readable form
-g, --saveprint all current settings in a stty-readable form
-F, --file=DEVICEopen and use the specified DEVICE instead of stdin
--helpdisplay this help and exit
--versionoutput version information and exit
Optional - before SETTING indicates negation.An * marks non-POSIX
settings.The underlying system defines which settings are available.
Special characters:
* dsusp CHARCHAR will send a terminal stop signal once input flushed
eof CHARCHAR will send an end of file (terminate the input)
eol CHARCHAR will end the line
* eol2 CHARalternate CHAR for ending the line
erase CHARCHAR will erase the last character typed
intr CHARCHAR will send an interrupt signal
kill CHARCHAR will erase the current line
* lnext CHARCHAR will enter the next character quoted
quit CHARCHAR will send a quit signal
* rprnt CHARCHAR will redraw the current line
start CHARCHAR will restart the output after stopping it
stop CHARCHAR will stop the output
susp CHARCHAR will send a terminal stop signal
* swtch CHARCHAR will switch to a different shell layer
* werase CHARCHAR will erase the last word typed
....
Handle the tty line connected to standard input.Without arguments,prints baud rate, line discipline, and deviations from stty sane.In settings, CHAR is taken literally, or coded as in ^c, 0x37, 0177 or 127; special values ^- or undef used to disable special characters.
Report bugs to <[email protected]>.
[[email protected] ~]$
與退格鍵相關的設定是erase,它表示刪除最後一個字元。
$stty erase ^H
說明:按下退格鍵會顯示成^H
如果在當前視窗執行的話,只對當前的視窗有效,下次登陸的時候還需要重新設定,可以把這個命令寫入shell 的配置檔案,如~/.bashrc 中,這樣每次都能生效了。
二. 方向鍵的問題
WIN 下使用方向鍵是沒有問題的,但是在Linux下,方向鍵是使用不了了。 可以安裝一下rlwrap 工具。
rlwrap本身是個遵循GPL 標準的Shell 指令碼,可以執行任何你提供給它的命令包括引數,並新增命令歷史瀏覽功能。
可以在http://rpm.pbone.net/ 上搜到這個工具的RPM包。
[[email protected] mnt]# rpm -ivh rlwrap-0.37-1.el5.i386.rpm
warning: rlwrap-0.37-1.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 217521f6
Preparing...########################################### [100%]
1:rlwrap########################################### [100%]
[[email protected] ~]$ rlwrap sqlplus / as sysdba;
SQL*Plus: Release 10.2.0.1.0 - Production on Fri Feb 3 15:13:13 2012
Copyright (c) 1982, 2005, Oracle.All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE10.2.0.1.0Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
SQL> select * from v$version;
現在就可以上下翻動了。 但是這樣沒事都需要加上rlwrap 也是很麻煩的,可以對rlwrap 做一個別名,放到shell 的配置檔案裡,在~/.bashrc 檔案裡新增如下內容:
alias sqlplus='rlwrap sqlplus'
[[email protected] ~]$ cat ~/.bashrc
# .bashrc
# Source global definitions
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi
# User specific aliases and functions
alias sqlplus='rlwrap sqlplus'
[[email protected] ~]$
[[email protected] ~]$ source ~/.bashrc--讓引數生效
[[email protected] ~]$ sqlplus / as sysdba;-- 然後就可以正常使用sqlplus了
SQL*Plus: Release 10.2.0.1.0 - Production on Fri Feb 3 15:18:07 2012
Copyright (c) 1982, 2005, Oracle.All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE10.2.0.1.0Production
TNS for Linux: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
SQL>
其他一些組合鍵:
Ctrl+A:ahead,到行的頂端,相當於 Home
Ctrl+E:end,到行的末端,相當於end
Ctrl+B:behind,後退一個字元,相當於left
Ctrl+F:forward,前進一個子放入,相當於right
Ctrl+P:prev.,上一行歷史記錄,相當於up
Ctrl+N:next.,下一行歷史記錄,相當於down
Ctrl+U:undo,回覆操作,這行就被清空掉了
Ctrl+W:剪下
Ctrl+Y:貼上
Ctrl+L:cLear,清屏
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