If you want to add multiple values in an array all at once, then, you can refer to this method where the user will be asked to enter the values one by one. And to do so, you'd have to use the following syntax: echo "Enter whitespace-separated values:" read -a array echo "You...
# Usage: random_array_element "array" local arr=("$@") printf '%s\n' "${arr[RANDOM % $#]}" } 1. 2. 3. 4. 5. 用法示例: $ array=(red green blue yellow brown) $ random_array_element "${array[@]}" yellow # Multiple arguments can also be passed. $ random_array_element 1...
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resulting in an empty output on the last iteration. To avoid this, ensure that your loop condition isindex -lt ${#numbers[@]}(less than the length of the array), notindex -le ${#numbers[@]}(less than or equal to the length of the array). ...
for str in "${string_array[@]}"; do echo $str done 如何SSH到另一台主机并在其上运行几个命令? #!/bin/bash # 先配置SSH的免密,之后执行此脚本 hostname ssh root@10.245.110.69 'hostname; whoami; date' hostname 如何使用IF语句比较字符串的值?
for str in "${string_array[@]}"; do echo $str done 如何SSH到另一台主机并在其上运行几个命令? #!/bin/bash # 先配置SSH的免密,之后执行此脚本 hostname ssh root@10.245.110.69 'hostname; whoami; date' hostname 如何使用IF语句比较字符串的值?
Now in order to comment out multiple lines, we place ” : ‘” a line before the lines to be commented out and a ”‘” after the end of the lines as shown below: #!/bin/bash : ' echo "THIS COMMAND IS GONNA GET EXECUTED" echo "UNLESS WE COMMENT OUT THE LINES" echo "USE BAS...
Bash Associative Array (dictionaries, hash table, or key/value pair) You cannot create an associative array on the fly in Bash. You can only use the declare built-in command with the uppercase “-A” option. The += operator allows you to append one or multiple key/value to an associati...
$ random_array_element "${array[@]}" yellow # Multiple arguments can also be passed. $ random_array_element 1 2 3 4 5 6 7 3 循环一个数组 每次printf调用时,都会打印下一个数组元素。当 打印到达最后一个数组元素时,它 再次从第一个元素开始。
$array=(red green blue yellow brown)$random_array_element"${array[@]}"yellow# Multiple arguments can also be passed.$random_array_element12345673 循环一个数组 每次printf调用时,都会打印下一个数组元素。当 打印到达最后一个数组元素时,它