shell遍歷多個數組
項目中拆分成多個微服務后,要shell啟動多個服務,唯一的區別,就是啟動類和環境不一樣外,其他都是一樣的,這樣就抽出了2個數組,需要在一個for循環中遍歷出來,demo如下:
[root@rocketmq-nameserver2 shell]# cat test6.sh
#!/bin/bash
a=(james tom jack)
b=(1 2 3)
# seq 0 `expr ${#a[@]} - 1`
for i in $(seq 0 `expr ${#a[@]} - 1`); do
_a=${a[i]}
_b=${b[i]}
echo $i, $_a, $_b
done
結果:
[root@rocketmq-nameserver2 shell]# sh test6.sh
0, james, 1
1, tom, 2
2, jack, 3
如果是單個數組的話:
[root@rocketmq-nameserver2 shell]# cat test5.sh
#!/bin/bash
day=(mon tue wed thu fri sat sun)
for word in ${day[@]}
do
echo $word
done
[root@rocketmq-nameserver2 shell]#
於是整合了一下,寫了一個具體的demo
[root@rocketmq-nameserver2 shell]# cat base.conf
a=(4 5 6)
b=(1 2 3)
[root@rocketmq-nameserver2 shell]# cat test7.sh
#!/bin/bash
sum()
{
echo "求兩個數的和..."
echo "兩個數字分別為 $1 和 $2 "
echo $(($1+$2))
}
test(){
bash_path=$(cd "$(dirname "$0")";pwd)
source $bash_path/base.conf
for i in $(seq 0 `expr ${#a[@]} - 1`); do
c=${a[i]}
d=${b[i]}
sum $c $d
done
}
test
[root@rocketmq-nameserver2 shell]#