#!/bin/bash # 方法一:直接赋值 array1=("value1" "value2" "value3") # 方法二:使用索引赋值 array2[0]="value1" array2[1]="value2" array2[2]="value3" # 方法三:从字符串分割赋值 string="value4 value5 value6" array3=($string) # 方法
方法一:使用${#array_name[@]}获取数组长度 在Bash中,可以使用${#array_name[@]}的形式来获取数组的长度。这个表达式会返回数组元素的个数。下面是使用${#array_name[@]}获取数组长度的示例: 代码语言:shell AI代码解释 fruits=("apple""banana""orange")length=${#fruits[@]}echo"数组长度为:$length" ...
Knowing the length of the array plays an important role in automating the flow or running the script as a cron job. We can loop through the array elements seamlessly. The data can be stored as well as fetched from these elements in an organized manner. In this tutorial, we learn different...
echo "This script needs at least $MINPARAMS command-line arguments!" fi echo exit 0 运行代码: bash test30.sh 1 2 10 The name of this script is "test.sh". The name of this script is "test.sh". Parameter #1 is 1 Parameter #2 is 2 --- All the command-line parameters are: 1 ...
for i in "${empty_array[@]}" do echo "Processing item: $i" done fi # Output: # Array is empty In this example, we first check if the length of the array is 0, which indicates that the array is empty. If it is, we print a message and skip the loop. If it’s not, we ...
输出将是 "The length is 5." 文件和目录操作 创建、读取、写入、移动、复制和删除文件和目录 在Bash 中,我们可以使用一些内置的命令来操作文件和目录: 创建文件:我们可以使用 touch 命令来创建一个新的空文件,例如:touch file.txt 这将会创建一个名为 file.txt 的新文件。 读取文件:我们可以使用 cat 命令来...
${array[@]:position:length}的语法可以提取数组成员。$ food=( apples bananas cucumbers dates eggs fajitas grapes ) $ echo ${food[@]:1:1} bananas $ echo ${food[@]:1:3} bananas cucumbers dates上面例子中,${food[@]:1:1}返回从数组1号位置开始的1个成员,${food[@]:1:3}返回从1号位置...
echo ${!example_array[@]}Copy The exclamation mark (!) retrieves array indices, which are the array keys in this case. The keys and values do not print in the order of declaration. Find Length of Associative Array To check the array length, prefix the array with the hash symbol (#)...
my_array 表示数组的名称, [@]/[*] 表示获取数组中的所有元素, # 前缀用于获取数组的长度, 即元素的个数遍历数组时需使用双引号, 否则 Shell 会对其进行通配符扩展和单词拆分 # 定义数组 my_array=("A" "B" "C" "D") echo ${my_array[0]} # output: A # 访问数组 echo "Length using @: ${...
How to get a Bash Array size? (Array length) How to remove a key from a Bash Array or delete the full array? (delete) Detailed Examples & FAQ How to shuffle the elements of an Array in a shell script? How to sort the elements of an Array in a shell script? How to get a subse...