Shell Script (ii)

1.Until Loop statement

#!/bin/basha=10;until [[$a-lt 0]];d oecho $a;((a--));d one;

2.case Selection Statement

#!/bin/bash#auto install lamp#by 2015-6-30case $1 in          apache ) echo  "Wait for install httpd server ..." yum  install http* -y;;         mysql ) echo -e  "wait fo install  Mysql server ... "        yum install mysql  mysql-devel mysql-server -y        ;;         php )         echo   "wait fo install php ..."         yum install  php php-server php-mysql -y        ;;         * ) echo -e  "\033[32musage:{$0 apache|mysql |php|help}\033[0m "              ;; Esac

3. Making a selection menu

#!/bin/bash#auto Install Lamp#by 2015-6-30

ps3= "Select your will exec menu:" select i in  "Apache"   "MySQL"   " PHP "docase  $i  in         apache ) echo " Wait  for install httpd server ... "yum install http* -y;;         mysql ) echo -e  "wait fo install  Mysql server ... "        yum install mysql  mysql-devel mysql-server -y        ;;         php )         echo   "wait fo install php ..."         yum install  php php-server php-mysql -y        ;;         * ) echo -e  "\033[32musage:{$0 apache|mysql|php|help}\033[0m "        ;; Esacdone

~ 4. Select Menu Exit Shell

#!/bin/bashps3= "Select a meau:" echo -e  "\033[32mplease chose a commend  to run\033[22m "select i  in  " W " " Top " " ifconfig " " free "   "Quit"         do         case     $i  in        w)          w;exit        ;;         top)         top;exit         ;;         ifconfig)          ifconfig;exit        ;;         free)         free  -m;exit        ;;         quit )          exit        ;;         *) echo -e "\033[32mplease input a number:\ 033[0m "  ;; Esacdone

5. Print multiplication Formula shell

#! /bin/bashfor i in ' seq 1 9 '; Do-J in ' seq 1 $i '; Do Echo-ne "${j}x${i}=$ (($i * $j)) \ t" done echodone

6.shell cut intercept Command-c list specifies the number of cut characters. The-f field specifies the number of clipping fields. -d Specifies a domain delimiter that differs from the space and the T a B key. -C is used to specify the clipping range, as follows:-C 1,5-7 cuts the 1th character, then the 5th to the 7th character. -C1-50 5 0 characters before clipping. The-f format is the same as-C. -F 1,5 Clipping 1th field, 5th field. -F 1,10-12 clipping 1th field, 1th 0 domain to 1th 2 domain. Example: cut-d:-f1/etc/passwd//with ":" As the delimiter, intercept the first column in the passwd cut-d:-f1,5/etc/passwd//Intercept the first and fifth columns

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Shell Script (ii)