Linux下數組遍歷

聲明一個數組變量

直接賦值：

array[0]=”Zero” array[1]=”One” array[2]=”Two”

declare聲明：

declare -a array

小括號空格法：

array=(Zero One Two)

引號空格法：

array=”Zero One Two”

混合法：

array=([0]=”Zero” [1]=”One” [2]=”Two”) 

遍歷一個數組

標准for循環：

for(( i=0;i<${#array[@]};i++)) 
do 
　　echo ${array[i]}
done

Zero
One
Two

for…in:

for i in ${array[@]}
do 
　　echo $i
done

Zero
One
Two

獲取數組的長度

echo ${#array[@]}
3
echo ${#array[*]}
3

刪除數組元素

unset array[0]
echo ${#array[@]}
2
for i in ${array[@]}
do 
　　echo $i 
done
One
Two

切片

echo ${array[@]:0:1}
Zero
echo ${array[@]:0:2}
Zero One
echo ${array[@]:0:3}
Zero One Two
echo ${array[@]:1}
One Two
echo ${array[@]:2}
Two

 

參考：

http://www.jb51.net/article/55253.htm（以上內容轉自此篇文章）

http://blog.csdn.net/tutuboke/article/details/48200839

http://www.jb51.net/article/120792.htm

http://blog.csdn.net/redhat456/article/details/6068409

http://blog.csdn.net/xujingzhong0077/article/details/53667279