[[ $i ]] && IFS=" " tmp_array["${i:- }"]=1 done printf '%s\n' "${!tmp_array[@]}" } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 用法示例: $ remove_array_dups 1 1 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5 1 2 3 4 5 $ arr=(red red green blue blue) $...
Loop over an arrayarr=(apples oranges tomatoes) # Just elements. for element in "${arr[@]}"; do printf '%s\n' "$element" doneLoop over an array with an indexarr=(apples oranges tomatoes) # Elements and index. for i in "${!arr[@]}"; do printf '%s\n' "${arr[i]}" done ...
etc, etc. An array of all of the arguments passed to your script is stored in$@, and we’ll discuss how to handle arrays later on in this chapter. The total number of arguments passed to your script is stored in$#. Now that you know how to pass arguments to your scripts you ...
In this example, we’ve created an array namedfruitswith three elements: ‘apple’, ‘banana’, and ‘cherry’. The ‘for’ loop then iterates over each element in the array. For each iteration, the current element’s value is stored in thefruitvariable, which we then use in theechocom...
$reverse_array1234554321$arr=(red blue green)$reverse_array"${arr[@]}"green blue red 删除重复的数组元素 创建临时关联数组。设置关联数组 值并发生重复赋值时,bash会覆盖该键。这 允许我们有效地删除数组重复。 CAVEAT:需要bash4+ 示例功能: remove_array_dups() {# Usage: remove_array_dups "array"dec...
First, the complete looping expression for elements in ${coffee[@]} iterates through the coffee array until it has covered the entire array length (which is 4) and prints the items into the terminal iteratively on new lines using echo $elements. From the output, you may notice that the ...
$ echo "Reversed array: ${reversed_numbers[@]}" Reversed array: 4 3 2 1 Here, we see that the array is reversed. 2.3. Using aforLoop Here, we iterate over the original arraynumbersfrom the last to the first element and append each element to a new array. ...
# Usage: remove_array_dups "array" declare -A tmp_array for i in "$@"; do [[ $i ]] && IFS=" " tmp_array["${i:- }"]=1 done printf '%s\n' "${!tmp_array[@]}" } 用法示例: $ remove_array_dups 1 1 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5 ...
6. Iterate over an Associative array Iterating over an associative array allows you to process each key-value pair. In Bash, you can loop through: Thekeysusing${!array_name[@]}. The correspondingvaluesusing${array_name[$key]}. This is useful for tasks like displaying data, modifying value...
Bash read array is the process of appending an array with data obtained from various sources such as files, command outputs, or standard inputs within scripts. This functionality lets fill up an empty array with values or even add elements into an array along with the existing ones making ...