/bin/sh (已经被 /bin/bash 所取代) /bin/bash (就是 Linux 预设的 shell) /bin/tcsh (整合 C Shell ,提供更多的功能) /bin/csh (已经被 /bin/tcsh 所取代) 虽然各家 shell 的功能都差不多,但是在某些语法的下达方面则有所不同,因此建议你还是得要选择 某一种 shell 来熟悉一下较佳。 Linux 预...
#!/bin/bash # 初始化一维数组 array=() # 初始化二维数组 array[0][0]="value1" array[0][1]="value2" array[1][0]="value3" array[1][1]="value4" # 访问二维数组元素 echo ${array[0][0]} # 输出: value1 echo ${array[0][1]} # 输出: value2 echo ${array[1][0]} # 输...
$ declare -A array $ for subscript in a b c d e > do > array[$subscript]="$subscript $RANDOM" > done $ printf ":%s:\n" "${array["c"]}" ## print one element :c 1574: $ printf ":%s:\n" "${array[@]}" ## print the entire array :a 13856: :b 6235: :c 1574: :d...
declare/typeset命令的选项解析: -a:将变量定义为数组类型array-i:将变量定义为整数类型integer-x:将变量定义为环境变量,同export命令作用一样-r:将变量定义为不可被更改的内容,也不能unset-p:查看当前遍历的类型 shell声明变量类型的示例: sum=1+2+3#创建默认类型的变量sum echo ${sum}#打印结果:1+2+3,...
How to get the Key/Value pair of a Bash Array? (Obtain Keys or Indices) 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? Ho...
“e” that has been getting the total size of this array “Arr2” using the “@” operator within its index. The “for” loop has been utilized to iterate the array and display each of its string values at the Bash shell using the “echo” statement and index “I”. Let’s save ...
Array size: 5 Array items: one two three four five Array indexes: 0 1 2 3 5 Array items and indexes: 0: one 1: two 2: three 3: four 5: five Note that the "@" sign can be used instead of the "*" in constructs such as ${arr[*]}, the result is the same except when ...
$people = Array( Array('name' => 'Kalle', 'salt' => 856412), Array('name' => 'Pierre', 'salt' => 215863) ); for($i = 0, $size = sizeof($people); $i < $size; ++$i) { $people[$i]['salt'] = rand(000000, 999999); ...
An array is a variable containing multiple values may be of same type or of different type. There is no maximum limit to the size of an array, nor any requirement that member variables be indexed or assigned contiguously. Array index starts with zero. I
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: $ remove_array_dups 1 1 2 2 3 3 3 3 3 4 4 4 4 4 5 5 5 5 5 5 ...