shell 注意事项

shell注意事项

• 记录日志
• shell执行加锁（针对不能同时执行）
• 加选项（禁止直接执行）
• 备注

#记录日志
#!/bin/bash

shell_log="./shell_log"

#Write log
shell_log(){
        shell_info=$1
        echo "$(date +%Y-%m-%d)T$(date +%H:%M:%S) : $shell_info"
}

shell_log $1

#综合示例
#!/bin/bash
#Author:duanyifei
#20170703

#shell Env
fastcdn_local_log="./fastcdn_local_log"
fastcdn_log="./fastcdn_log"
local_log="./local_log"
shell_name="duanyifei.search.sh"
shell_lock_file="/tmp/${shell_name}.lock"
domains=`cat yuming`

#fastcdn Function
fastcdn(){
        echo -e "\033[31m ----------$1--------------  \033[0m"
        dnstmk.pl  -u $1 | grep ‘IN‘
        echo
}

#local Function
local(){
        checklocaldns -u $1
        echo
}

#All Function
all(){
        fastcdn $1
        local $1
        echo
}

#shell_lock
shell_lock(){
    touch $shell_lock_file
}

#shell_unlock
shell_unlock(){
    rm -rf $shell_lock_file
}

#main Function
main(){
    if [ -e $shell_lock_file ];then
        echo "duanyifei_search_shell is running" && exit
    fi
    shell_lock
    case $1 in
        fastcdn)
            rm -rf $fastcdn_log
            for domain in $domains
            do
                fastcdn $domain &>> $fastcdn_log
            done
            ;;
        local)
            rm -rf $local_log
            for domain in $domains
            do
                local $domain &>> $local_log
            done
            ;;
        all)
            rm -rf $fastcdn_local_log
            for domain in $domains
            do
                all $domain &>> $fastcdn_local_log
            done
            ;;
        *)
            echo "Usage: fastcdn | local | all"
    esac
    shell_unlock
}

#Exec
main $1