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1.ÐÞ¸Ä/etc/profileÎļþ
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JAVA_HOME=/usr/share/jdk1.5.0_05
PATH=$JAVA_HOME/bin:$PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export JAVA_HOME
export PATH
export CLASSPATH
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a. ÄãÒª½« /usr/share/jdk1.5.0_05jdk ¸ÄΪÄãµÄjdk°²×°Ä¿Â¼
 b. linuxÏÂÓÃðºÅ“:”À´·Ö¸ô·¾¶
 c. $PATH / $CLASSPATH / $JAVA_HOME ÊÇÓÃÀ´ÒýÓÃÔ­À´µÄ»·¾³±äÁ¿µÄÖµ,ÔÚÉèÖû·¾³±äÁ¿Ê±ÌرðҪעÒâ²»ÄܰÑÔ­À´µÄÖµ¸ø¸²¸ÇµôÁË£¬ÕâÊÇÒ»ÖÖ³£¼ûµÄ´íÎó¡£
 d. CLASSPATHÖе±Ç°Ä¿Â¼“.”²»Äܶª,°Ñµ±Ç°Ä¿Â¼¶ªµôÒ²Êdz£¼ûµÄ´íÎó¡£
 e. exportÊǰÑÕâÈý¸ö±äÁ¿µ¼³öΪȫ¾Ö±äÁ¿¡£
 f. ´óСд±ØÐëÑϸñÇø·Ö¡£
 
2.ÐÞ¸Ä.bashrcÎļþ¡¡
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set JAVA_HOME=/usr/share/jdk1.5.0_05
export JAVA_HOME
set PATH=$JAVA_HOME/bin:$PATH
export PATH
set CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export CLASSPATH
 
3.Ö±½ÓÔÚshellÏÂÉèÖñäÁ¿
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export JAVA_HOME=/usr/share/jdk1.5.0_05
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
 
 
 
read : ¸ø±äÁ¿¸³Öµ Àý£ºread study best   µÈ¼ÛÓÚ study=best
                                 echo $study
                                  best
|:pipe operator Àý ps | sort | more
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Linux iptableÎĵµ

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iptables -D chain rule num[option]
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iptables -[NX] chain
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°ÑARM linuxµÄ½»²æ¿ª·¢»·¾³£¬kernel, filesystem,
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arm-linux-toolchains.tgz
matrix5-kernel-v5.5.tgz
vivi.tar.gz
Jflash.tgz
root-for-nfs-v5.5.tgz
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½»²æ±àÒëÆ÷×°ÔÚ£º/usr/local/
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ÔÚlinuxÉÏÅäÖÃunixODBCºÍFreeTDS·ÃÎÊMS SQL Server.

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ÏÂÔØ°²×°°ü. ÔÚ RedHat °²×°¹âÅÌÉϾÍÓÐ
unixODBC-2.2.11-1.RHEL4.1.i386.rpm
unixODBC-devel-2.2.11-1.RHEL4.1.i386.rpm
unixODBC-kde-2.2.11-1.RHEL4.1.i386.rpm
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rpm -Uvh unixODBC-2.2.11-1.RHEL4.1.i386.rpm
rpm -Uvh unixODBC-devel-2.2.11-1.RHEL4.1.i386.rpm
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LinuxÍü¼ÇÃÜÂëÔõô°ì£¿

1. ÔÚ³öÏÖgrub»­ÃæÊ±£¬ÓÃÉÏϼüÑ¡ÖÐÄãÆ½Ê±Æô¶¯linuxµÄÄÇÒ»Ïî(±ðÑ¡dosÓ´)£¬È»ºó°´e¼ü
2. ÔÙ´ÎÓÃÉÏϼüÑ¡ÖÐÄãÆ½Ê±Æô¶¯linuxµÄÄÇÒ»Ïî(ÀàËÆÓÚkernel /boot/vmlinuz-2.4.18-14 ro root=LABEL=/)£¬È»ºó°´e¼ü
3. ÐÞ¸ÄÄãÏÖÔÚ¼ûµ½µÄÃüÁîÐУ¬¼ÓÈësingle£¬½á¹ûÈçÏ£º
kernel /boot/vmlinuz-2.4.18-14 single ro root=LABEL=/
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