shell中的“數組”

標籤：取數   col   數組名   value   echo   shell   [1]   定義   擷取   

 

定義數組

數組名=(值1 值2 ... 值n)

[[email protected] ~]# array_name=(value1 value2 value3 value4)

讀取數組

${數組名[下標]}

[[email protected] ~]# echo "${array_name}"value1[[email protected]-R3-srv ~]# echo "${array_name[0]}"value1[[email protected]-R3-srv ~]# echo "${array_name[1]}"value2[[email protected]-R3-srv ~]# echo "${array_name[2]}"value3[[email protected]-R3-srv ~]# echo "${array_name[3]}"value4

擷取數組中元素個數

[[email protected] ~]# echo "${#array_name[@]}"4[[email protected]-R3-srv ~]# echo "${#array_name[*]}"4

擷取單個元素的的長度(主要是字串的字元長度)

[[email protected] ~]# echo "${#array_name[0]}"6

 

shell中的“數組”