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1.
shopt bash2.0ÒÔÉÏеÄÃüÁ¹¦ÄܺÍsetÀàËÆ¡£
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2.
$# ´«µÝµ½½Å±¾µÄ²ÎÊý¸öÊý
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$$ ½Å±¾ÔËÐеĵ±Ç°½ø³ÌIDºÅ
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$- ÏÔʾshellʹÓõĵ±Ç°Ñ¡ÏÓësetÃüÁÄÜÏàͬ
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3.
echo ÃüÁîÖÐʹÓÃ" "ÎÞ·¨Ö±½Óʶ±ðתÒå×Ö·û£¬±ØÐëʹÓÃÑ¡Ïî -e£¬µ«¿ÉÒÔʹÓÃ$ºÍ`ÒýÓñäÁ¿ºÍÃüÁîÌæ»»¡£
$[] ¸æËßshell¶Ô·½À¨ºÅÖбí´ïʽÇóÖµ $[a+b]£¬Èç$[1+8]
4.
tee
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tee -a file -----a±íʾÔÚÎļþĩβ׷¼Ó£¬²»Òª-aÔò¸²¸Ç
¸ÃÃüÁîÒ»°ãÓë¹ÜµÀºÏÓÃ
5.
command>filename>&1 ---°Ñ±ê×¼Êä³öºÍ±ê×¼´íÎóÖØ¶¨Ïò
command<<delimiter ---ÊäÈëÖ±µ½delimiter·Ö½â·û
eg£º
sqlplus / as sysdba <<EOF
show parameters
exit
EOF
6.ÃüÁîÌæ»»ÓÐÁ½ÖÖ·½Ê½£¬ÀϵÄkorn·ç¸ñµÄ`linux command`ºÍеÄbash·ç¸ñ$(linux command)
7.¶¨ÒåÊý×é
declare -a arry=(a1 a2 a3 ...)
echo ${a[n]}
8.readʹÓÃ
read -a arryname ---¶ÁÈëΪÊý×é
read -p prompt ----Êä³öÌáʾ£¬²¢°ÑÌáʾºóµÄÊäÈë´æµ½REPLYÄÚ½¨±äÁ¿ÖÐ
[test@szbirdora 1]$ read -p "Enter your name:"
Enter your name:jack
[test@szbirdora 1]$ echo $REPLY
jack
[test@szbirdora 1]$ read -a name
jack tom susan
[test@szbirdora 1]$ echo ${name[2]}
susan
[test@szbirdora 1]$ echo ${name[0]}
jack
9.¶à½øÖÆÕûÐͱäÁ¿±íʾ
declare -i number
number=base#number_in_the_base
È磺
declare -i number
number=2#101
number=16#A9
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MySQL-client-5.0.46.i386.rpm
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sudo apt-get install mysql-servel-5.0 mysql-client-5.0
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sudo apt-get install libmysqlclient15-dev
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