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1> ʹÓÃCDPATHÉèÖà cd ÃüÁîµÄ¹¤×÷Ŀ¼
[ramesh@dev-db ~]# pwd 
/home/ramesh 
[ramesh@dev-db ~]# cd mail 
-bash: cd: mail: No such file or directory 
[×¢Ò⣺ÔÚµ±Ç°Ä¿Â¼ÏÂѰÕÒMAILĿ¼] 
[ramesh@dev-db ~]# export CDPATH=/etc 
[ramesh@dev-db ~]# cd mail /etc/mail 
[×¢Ò⣺ÕâÊÇÔÚ/etcÏÂѰÕÒMAILĿ¼] 
[ramesh@dev-db /etc/mail]# pwd 
/etc/mail 
ÏëÒªÕâ¸öÉèÖÃÓÀ¾ÃÉúЧ, °Ñexport CDPATH=/etc Ìí¼Óµ½ÄãµÄ.bash_profileÖС£
2> ʹÓÃcd ±ðÃû(alias)À´¸üÓÐЧµÄ·µ»ØÉϲãĿ¼
# mkdir -p /tmp/very/long/directory/structure/that/is/too/deep 
# cd /tmp/very/long/directory/structure/that/is/too/deep 
# pwd /tmp/very/long/directory/structure/that/is/too/deep 
# cd ../../../../
Ìí¼ÓÈçÏÂ
alias cd1="cd .." 
alias cd2="cd ../.." 
alias cd3="cd ../../.." 
alias cd4="cd ../../../.." 
alias cd5="cd ../../../../.."
µ½ÄãµÄ.bash_profileÖк󣬾ͿÉÒÔÈçÏ»ص½Éϲã/ÉÏÉϲã/ÉÏÉÏÉϲãĿ¼ÁË  :)
# cd /tmp/very/long/directory/structure/that/is/too/deep
# cd4
# pwd
/tmp/very/long/directory/structure/


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LinuxÏÂÆô¶¯oracle10gµÄemºÍisqlplus

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1,ʹÓÃEM(enterprise managment)
1.1Æô¶¯EM
$ORACLE_HOME/bin/emctl start dbconsole
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Z set to PRC
Oracle Enterprise Manager 10g Database Control Release 10.1.0.3.0
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ÔÚwindowsƽ̨Éϴlinux C ¿ª·¢»·¾³

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linuxϵͳ±à³Ì ϵͳµ÷ÓÃ

1.fork
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2.clone          
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3.execve
          ÔËÐпÉÖ´ÐÐÎļþ
4.exit       ......

LinuxÏÂrar tar bz gzµÈÃüÁîѹËõºÍ½âѹÏê½â

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http://www.rarlab.com/
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$wget http://www.rarlab.com/rar
/rarlinux-3.8.0.tar.gz

rar
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#tar zxvf rarlinux-3.8.0 ......

LINUXµÄһЩÃüÁî

# uname -a # ²é¿´ÄÚºË/²Ù×÷ϵͳ/CPUÐÅÏ¢
# head -n 1 /etc/issue # ²é¿´²Ù×÷ϵͳ°æ±¾
# cat /proc/cpuinfo # ²é¿´CPUÐÅÏ¢
# hostname # ²é¿´¼ÆËã»úÃû
# lspci -tv # ÁгöËùÓÐPCIÉ豸
# lsusb -tv # ÁгöËùÓÐUSBÉ豸
# lsmod # Áгö¼ÓÔØµÄÄÚºËÄ£¿é
# env # ²é¿´»·¾³±äÁ¿ ×ÊÔ´
# free -m # ²é¿´ÄÚ´æÊ¹ÓÃÁ¿ºÍ½»»»Ç ......
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