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shell��L��件的�Ҏ��

abin — Tue, 13 Jan 2015 04:59:00 GMT

��L��件的�Ҏ��Q?/p>

�W�一步： ��文件的内容通过��道�Q�|�Q�或重定向（<�Q�的方式传给while

�W�二步： while中调用read��文件内容一行一行的��d��来，�q�付值给read后跟随的变量。变量中��׃��存了当前行中的内宏V�?/p>

例如��d��文�g/sites/linuxpig.com.txt

1�Q�管道的方式�Q?/strong>

     cat /sites/linuxpig.com.txt |while read LINE
     do
         echo $LINE
     done

   当然也可以将cat /sites/linuxpig.com.txt 写成一些复杂一些的�Q�比如：

    �C�Z��1�Q?/strong>
   find -type f -name "*.txt" -exec cat |while read LINE
     do
         echo $LINE
     done
   可以��当前目录所有以 .txt �l�尾的文件读�?br style="word-wrap: break-word;" />
   �C�Z��2�Q?/strong>
   grep -r "linuxpig.com" ./ | awk -F":" '{print $1}' | cat |while read LINE
     do
         echo $LINE
     done

可以��含�?"linuxpig.com" 字符串的所有文件打开�q�读取。�?/p>

�C�Z��没有实际��试�Q�如果��用请先测试。。。。�?-)

2�Q�重定向的方式：

2.1 利用重定向符<

     while read LINE
     do
         echo $LINE
     done < /sites/linuxpig.com.txt

2.2 利用文�g描述�W�（0~9�Q�和重定向符 <

     exec 3<&0
     exec 0     while read LINE
     do
         echo $LINE
     done
     exec 0<&3

abin 2015-01-13 12:59 发表评论

abin — Sat, 10 Jan 2015 17:23:00 GMT

1、把命��o�l�果赋值给变量
#!/bash/bin
echo "1 2 3 4"|awk '{print $1}'
temp=`echo "1 2 3 4"|awk '{print $1}'`;
echo $temp;
2�?br />

abin 2015-01-11 01:23 发表评论

shell �~�程——for in 循环

abin — Sat, 10 Jan 2015 14:06:00 GMT

   for in 格式

for �?变量 in 字符�?/span>
do
$变量
done

一��单的字符�?枚�D遍历法，利用for in格式对字�W�串按空格切�?/span>的功�?br />
SERVICES="80   22   25   110   8000   23   20   21   3306   "

for   x   in   $SERVICES
do
iptables   -A   INPUT   -p   tcp   --dport   $x   -m   state   --state   NEW   -j   ACCEPT
done


    for variable in values   --------字符串数�l�依�ơ赋�?/span>

#!/bin/sh
for i in a b c           字符串列表A B C
         字符串用�I�格分隔,没有括号,没有逗号, 然后循环��其依次赋给变量i
         变量没有$
do
echo "i is $i"
done

[macg@machome ~]$ sh test.sh
i is a
i is b
i is c

    for in 里，变量�?不等�?/span>

#!/bin/bash

for i in *.h ;
do
cat ${i}.h
done

[macg@vm test]$ ./tip.sh
cat: *.h.h: No such file or directory
$i代表的是整个路径�Q�而不�?.h里的.h前面的部�?/span>
�Ҏ��

#!/bin/bash

for i in *.h
do
cat $i
done

[macg@vm test]$ echo hahaha >>1.h
[macg@vm test]$ echo ha >>2.h

[macg@vm test]$ ./tip.sh
hahaha
ha
�?�Q?br />

for i in /etc/profile.d/*.sh
do
$i
done
$i代表的是/etc/profile.d/color.sh,
/etc/profile.d/alias.sh, /etc/profile.d/default.sh


    for in �?命��o行，函数)参数遍历

test()
{
        local i

        for i in $* ; do
             echo "i is $i"
        done
}
$*是字�W�串�Q�以"参数1 参数2 ... " 形式保存所有参�?nbsp;
$i是变量i的应用表�C?br />

[macg@machome ~]$ sh test.sh p1 p2 p3 p4

i is p1
i is p2
i is p3
i is p4

    for in语句与通配�W?合用,扚w��处理文�g
    扚w��Ҏ��件名

[root@vm testtip]# ls
aaa.txt ccc.txt eee.txt ggg.txt hhh.txt jjj.txt lll.txt nnn.txt
bbb.txt ddd.txt fff.txt go.sh    iii.txt kkk.txt mmm.txt ooo.txt

[root@vm testtip]# cat go.sh
for i in *.txt                 *.txt相当于一个字�W�串数组�Q�依�ơ��@环赋值给i
do
mv "$i" "$i.bak"
done

[root@vm testtip]# sh go.sh

[root@vm testtip]# ls
aaa.txt.bak ccc.txt.bak eee.txt.bak ggg.txt.bak hhh.txt.bak jjj.txt.bak lll.txt.bak nnn.txt.bak bbb.txt.bak ddd.txt.bak fff.txt.bak go.sh        iii.txt.bak kkk.txt.bak mmm.txt.bak ooo.txt.bak

    for in语句与` `�?( )合用�Q�利�?span style="color: #ff0000">` `�?( )的将多行合�ؓ一行的�~�陷�Q�实际是合�ؓ一个字�W�串数组

for i in $(ls *.txt)
do
echo $i
done

[macg@machome ~]$ sh test
111-tmp.txt
111.txt
22.txt
33.txt
或者说�Q�利用for in克服` `�?( ) 的多行合��Z��行的�~�陷

   利用for in 自动对字�W�串按空格遍历的�Ҏ��，对多个目录遍�?/span>

LIST="rootfs usr data data2"

for d in $LIST; do
mount /backup/$d
rsync -ax --exclude fstab --delete /$d/ /backup/$d/
umount /backup/$d
done

abin 2015-01-10 22:06 发表评论

shell mysql 查询

abin — Sat, 10 Jan 2015 14:04:00 GMT
1�?br />
#!/bin/bash
mysql -u* -h* -p* <
Your SQL script.
EOF
2�?span style="font-family: Tahoma, Helvetica, Arial, 宋体, sans-serif; line-height: 25px; background-color: #f7fcff;">准备一个sql脚本�Q�如update.sql�Q�然后执行如下命令：

mysql -uroot -ppassword < update.sql
3�?br />mysql -Dftp -uroot -proot -e"select user FROM users" >users.txt
catfilename="users.txt"

for i in `cat $catfilename`;
do

      echo "$i"

done
4�?br />
echo "select user FROM ftp.users" | mysql -u root -proot

5�?span style="color: #555555; font-family: 宋体, 'Arial Narrow', arial, serif; line-height: 28px; background-color: #ffffff;">使用mysql参数的方�?/span>
mysql -u$user -p$pass -D $db -e "select host from user;"
6、忽略mysql列名
#!/bin/bash
MYSQL=mysql #选用mysql�E�序
USER=root #讑֮�用户�?br /> PASSWORD="123456" #讑֮�数据库的用户密码
DB=eucalyptus_auth #选定需要的数据�?br />
COMMAND="select auth_user_query_id, auth_user_secretkey from auth_users where auth_user_name=\"admin\" " #查找需要的数据sql语句
declare count=`$MYSQL -u${USER} -p${PASSWORD} -D ${DB} -e "${COMMAND}" --skip-column-name` #执行mysql的查询，�q�将其记录到count�?br /> for list in $count
do
echo " the item is $list"
done #��d��得到的数�?/pre>7、取出数据表里面的一行的�W�一�?br />
#!/bin/sh
HOST="192.168.111.11"
PORT="3306"
USERNAME="root"
PWD="root"
DBNAME="abin"
TNAME="city"
select_sql="select * from ${TNAME}"
mysql -h${HOST} -P${PORT} -u${USERNAME} -p${PWD} ${DBNAME} -e "set names utf8; ${select_sql}" --skip-column-name| while read line;
do
midd=`echo "$line" | awk '{print $1}'`;
echo ${midd};
done;
~
8�?br />
mysql database -u $user -p $password -e "SELECT A, B, C FROM table_a"|while read a b c
do
echo $a $b $c
don
9�?br />
exec 8<>file
mysql database -u $user -p $password -e "SELECT A, B, C FROM table_a"
while read a b c
do
echo $a $b $c
done<&8

10�?br />
#!/bin/sh
HOST="localhost"
PORT="3306"
USERNAME="root"
PWD=""
DBNAME="abin"
CITYNAME="city"
BNAME="bussiness"
HNAME="height"
parameter=$1
type=$2
echo "parameter=${parameter},type=${type}"
select_sql="select * from ${CITYNAME} t where t.code='${parameter}'"
mysql -h${HOST} -P${PORT} -u${USERNAME} -p${PWD} ${DBNAME} -e "set names utf8; ${select_sql}" --skip-column-name| while read a b c;
do
id=${a};
echo "id=${id}"
if [ $type = 1 ];then
echo "type=${type},id=${id}"
bus_sql="select * from ${BNAME} t where t.ccode=${id}"
mysql -h${HOST} -P${PORT} -u${USERNAME} -p${PWD} ${DBNAME} -e "set names utf8; ${bus_sql}" --skip-column-name | while read d e f g;
do
echo "bussiness=${e},city_code=${g},bussiness_code=${f}"
done
elif [ $type = 2 ];then
echo "type=${type},id=${id}"
hei_sql="select * from ${HNAME} t where t.ccode=${id}"
mysql -h${HOST} -P${PORT} -u${USERNAME} -p${PWD} ${DBNAME} -e "set names utf8; ${hei_sql}" --skip-column-name | while read h i j k;
do
echo "sex=${i},height=${j},city_code=${k}"
done
else
echo "others"
fi;
done

abin 2015-01-10 22:04 发表评论

shell 脚本遍历select的结果集怎么实现

abin — Sat, 10 Jan 2015 13:08:00 GMT

�?MySQL ��Z��:
mysql -e "select * from tbl" | while read line ; do echo "$line" ; done

abin 2015-01-10 21:08 发表评论

abin — Sat, 10 Jan 2015 13:06:00 GMT
在linux下用shell脚本��d��mysql�l�果集中值的二种�Ҏ��Q�按行读取sql�l�果�Q�将sql执行�l�果��d��到shell变量中，然后��d��?br />
shell脚本��d��mysql�l�果集的�?/strong>
按行��d��sql�l�果�Q?/p>
while read -a row
do
echo "..${row[0]}..${row[1]}..${row[2]}.."
done < <(echo "SELECT A, B, C FROM table_a"
mysql database -u $user -p $password)
��sql执行�l�果��d��到shell变量中：
while read a b c
do
echo "..${a}..${b}..${c}.."
done < <(echo "SELECT A, B, C FROM table_a"
mysql database -u $user -p $password)

abin 2015-01-10 21:06 发表评论

mysql shell ��q��

abin — Sat, 10 Jan 2015 12:58:00 GMT
�l�常要在shell下查询数据库的东西，数据库有中文�Q�shell昄��是��q��Q�有几个�Ҏ��看看�l�果
首先linux中文字体要安装，�q�个自己装，数据库的字符集要支持中文�Q�我的支持啊�Q�然后就是在写shell的时候的问题�?/div>
mysql -u root -p --default-character-set=utf8 db -e "select * from tb where A=10;"
�q�个昄��的就是�ؕ�?/div>
mysql -u root -p db -e "set names utf8 ;select * from tb where A=10;"
�q�个�q�是��q��
mysql -u root -p db -e "set names Latin1 ;select * from tb where A=10;"
�q�个也是��q��
mysql -u root -p db -e "set names gbk ;select * from tb where A=10;"
最后这个却昄��中文了！�Q�！�Q?br />

http://wdegang.blog.51cto.com/134120/1137929

abin 2015-01-10 20:58 发表评论

linux if elif else fi

abin — Sat, 10 Jan 2015 11:19:00 GMT
1、接收linuxshell控制台输入的字符串参敎ͼ�
#!/bash/bin
parameter=$1
if [ $parameter = "a" ];then
echo "equals"
elif [ $parameter = "b" ];then
echo "not"
else
echo "kong"
fi
2、接收linuxshell控制台输入的数字参数�Q?br />
#!/bash/bin
parameter=$1
if [ $parameter = 1 ];then
echo "input is $parameter"
elif [ $parameter = 2 ];then
echo "input is $parameter"
else
echo "input is other: $parameter"
fi

3、接收linuxshell控制台输入的旉��参数�Q?br />

abin 2015-01-10 19:19 发表评论

国产精品综合一区二区三区,亚洲精品白浆高清,性做久久久久久久免费看

shell��L��件的�Ҏ��

shell �~�程——for in 循环

shell mysql 查询

shell 脚本 遍历select的结果集怎么实现

�?MySQL ��Z��:mysql -e "select * from tbl" | while read line ; do echo "$line" ; done

shell脚本��d��mysql�l�果集的�?/strong>

mysql shell ��q��

linux if elif else fi

shell 脚本遍历select的结果集怎么实现

�?MySQL ��Z��:
`mysql -e` `"select * from tbl"` `|` `while` `read` `line ;` `do` `echo` `"$line"` `;` `done`