Length of first element of array:显示属组中第几号元素中字符长度; ${#array} ${#array[0]}(属组当中第0号元素当中有多少个字符长度) ${#array[1]} Number of elements in array:(显示AA数组中元素有赋值不为空的个数) ${#array[*]} ${#array[@]} ${#array[8]} 写一个脚本: 随机从同学们...
8.1. Declare simple bash array #!/bin/bash #Declare array with 4 elements ARRAY=( 'Debian Linux' 'Redhat Linux' Ubuntu Linux ) # get number of elements in the array ELEMENTS=${#ARRAY[@]} # echo each element in array # for loop for (( i=0;i<$ELEMENTS;i++)); do echo ${ARRAY...
numbers=(12345)fornumin"${numbers[@]}"doif((num%2==0))thenecho"$numis even"elseecho"$numis odd"fidone# Output:# 1 is odd# 2 is even# 3 is odd# 4 is even# 5 is odd Bash Copy In this example, we have an arraynumberswith five elements. We use a ‘for’ loop to iterate...
Array in Bash: Displaying all elements of array, The echo approaches are both buggy -- try entering * as a value in the array; you'll see neither one prints it correctly.declare -p array is best practice if unambiguous output is the top priority.printf '%q\n' "${array[@]}" is a...
To print the array index, value, and type: declare -p <your_array> To print the array iteratively: for item in ${your_array[@]} do echo $item done To print the array in new lines: printf "%s\n" "${array_name[@]}" To print specific elements from an array: echo "${array[ind...
例如,array=("element 1" "element 2" "element 3")。如果引号使用不正确,可能会导致创建数组时出错。 Shell环境错误:有时候,创建数组时出错可能是由于使用的shell环境不支持数组操作。在某些较旧的shell版本中,可能不支持数组。请确保使用的是支持数组操作的bash版本。 如果在bash中创建数组时出错,可以按照上述...
echo ${#sounds[@]} # Number of elementsunset sounds[dog] # Delete dog 迭代 123 for val in "${sounds[@]}"; do echo $valdone 123 for key in "${!sounds[@]}"; do echo $keydone Bash 条件句 整数条件 条件描述 [[ NUM -eq NUM ]] 等于Equal [[ NUM -ne NUM ]] 不等于 Not ...
# Usage: remove_array_dups "array" declare -A tmp_array for i in "$@"; do [[ $i ]] && IFS=" " tmp_array["${i:- }"]=1 done printf '%s\n' "${!tmp_array[@]}" } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 用法示例: ...
array_name[1]=value1 array_name[n]=valuen Get an element of an array ${array_name[n]} Get all elements of an array ${array_name[@]} Get length of an array ${#array_name[@]} ${#array_name[*]} Get length of element n ${#array_name[n]} Through an array for data in ${...
The particular values of the associative array are printed here by mentioning the key or index value: Go to top Count the Array Values The method of counting the total elements of the numeric array and the associative array is shown in the following script: #!/bin/bash #Declare a numeric ...