shell——記錄我的腳本的一個進階

    該腳本中運用到工做中經常使用的shell語法，瑣碎的語法結合起來能夠幫助處理工做，解放人力。

主要經常使用的shell知識點：

1. 判斷參數是否存在和判斷參數個數

2. 聲明函數

3. 判斷字符串相等

4. 判斷字符串包含

5. 判斷數組內容和數組個數，並循環數組

6. if多條件語法

7. sed 
   

記錄該腳本，是爲了記錄一些基礎語法，將來忘了能夠翻閱。 把基礎的語法運用得當，更好的協助運維的工做。腳本只適用一些特殊需求。

#!/bin/bash

# 2017/1/11

#適用添加m站點的腳本。 將域名 改變成目錄代理的方式。 

LIST=`echo "$1" | cut -d. -f1`

LISTER=`echo "$1" | cut -d. -f2`

oldnip=`echo "$3" | sed 's/\// /g'`

nip=($oldnip)

PORT="$2"

HOST=$(hostname)

#判斷是否在nginx服務器主機上執行，並因爲目錄不一致，而聲明瞭兩個不一樣變量

if [ $HOST = "tnginx101" ];then

ROUTE="/app/nginx"

elif [ $HOST = "tnginx102" ];then

ROUTE="/usr/local/nginx"

else

echo "$HOST not nginx proxy"

exit 2

fi

DIRECTORY="/app/shell/mtemplate/msite"

TEMPLATE="/app/shell/mtemplate"

MPROXY="$ROUTE/conf/Directory"

#判斷參數個數是否正確

if [ -z $1 ] && [ -z $2 ] && [ -z $3 ];then

echo "Please input three arguments"

echo "Usage: $basename$0 content.m.mallcoo.cn 9001 web101/web102"

exit 2

fi

if [ $# -ne 3 ];then

echo "input arguments error"

exit 2

fi

if [ ! -d $MPROXY ];then

echo "not exist $MPROXY"

exit 3

fi

if [ ! -d $DIRECTORY ] ;then

echo "not exist "$DIRECTORY""

exit 2

fi

upstream_http(){

if [ $LISTER = "m" ];then

cat $TEMPLATE/upstream_template > $DIRECTORY/Server-Port.conf

sed -i 's/template_template_http/'$LIST'_m_http/g' $DIRECTORY/Server-Port.conf

if [ ${#nip[@]} -gt 1 ];then

        for i in ${nip[*]};do

                sed -i '/upstream/a\    server '$i':'$PORT' weight=2 max_fails=2 fail_timeout=30s;' $DIRECTORY/Server-Port.conf

        done

elif [ ${#nip[@]} -eq 1 ];then

sed -i '/upstream/a\    server '$nip':'$PORT' weight=2 max_fails=2 fail_timeout=30s;' $DIRECTORY/Server-Port.conf

else

echo "please confirm it "

exit 2

fi

cat $DIRECTORY/Server-Port.conf >> $MPROXY/Server-Port.conf

fi

#匹配域名 第二節 包含api的字符。如content.api.mallcoo.cn 

if [[ $LISTER =~ "api" ]];then

cat $TEMPLATE/upstream_template > $DIRECTORY/Server-Port.conf

sed -i 's/template_template_http/'$LIST'_api_http/g' $DIRECTORY/Server-Port.conf

if [ ${#nip[@]} -gt 1 ];then

        for i in ${nip[*]};do

                sed -i '/upstream/a\    server '$i':'$PORT' weight=2 max_fails=2 fail_timeout=30s;' $DIRECTORY/Server-Port.conf

        done

elif [ ${#nip[@]} -eq 1 ];then

sed -i '/upstream/a\    server '$nip':'$PORT' weight=2 max_fails=2 fail_timeout=30s;' $DIRECTORY/Server-Port.conf

else

echo "please confirm it "

exit 2

fi

cat $DIRECTORY/Server-Port.conf >> $MPROXY/Server-Port.conf

fi

}

#追加 location_http

location_http(){

if [ $LISTER = "m" ];then

cat $TEMPLATE/location_template > $DIRECTORY/Http.conf

sed -i 's/mould\/mould/a\/'$LIST'/g' $DIRECTORY/Http.conf

sed -i 's/template_template_http/'$LIST'_m_http/g' $DIRECTORY/Http.conf

cat $DIRECTORY/Http.conf >> $MPROXY/Http.conf

fi

if [[ $LISTER =~ "api" ]];then

cat $TEMPLATE/location_template > $DIRECTORY/Http.conf

        sed -i 's/mould\/mould/api\/'$LIST'/g' $DIRECTORY/Http.conf

        sed -i 's/template_template_http/'$LIST'_api_http/g' $DIRECTORY/Http.conf

cat $DIRECTORY/Http.conf >> $MPROXY/Http.conf

fi

}

upstream_http

location_http