但由于 array_to_string_internal() 在Array.C. 仍然循环超过数组元素并将它们连接到一个字符串中,它可能不会比提出的循环解决方案更效率,但它更可读。 if [[ " ${array[*]} " =~ " ${value} " ]]; then # whatever you want to do when array contains value fi if [[ ! " ${array[*]} ...
Thepatternwillmatchif itmatchesanypartofthe string. Anchor thepatternusingthe ‘^’and‘$’ regular expression operatorstoforce ittomatchthe entire string. Thearrayvariable BASH_REMATCH records which partsofthe string matched the pattern. The elementofBASH_REMATCHwithindex0containstheportionofthe string...
例如array=("Jack Brown")value="Jack"霸王龙会看到Jack即使它不在数组中，所以你必须改变IF...
The pattern will match if it matches any part of the string. Anchor the pattern using the ‘^’ and ‘$’ regular expression operators to force it to match the entire string. The array variable BASH_REMATCH records which parts of the string matched the pattern. The element of BASH_REMATC...
How to shuffle the elements of an Array in a shell script? How to sort the elements of an Array in a shell script? How to get a subset of an Array? How to check if a Bash Array is empty? How to check if a Bash Array contains a value? How to store each line of a file into...
如果if结构使用的不是test命令,而是普通命令,比如上一节的((...))算术运算,或者test命令与普通命令混用,那么可以使用 Bash 的命令控制操作符&&(AND)和||(OR),进行多个命令的逻辑运算。$ command1 && command2 $ command1 || command2对于&&操作符,先执行command1,只有command1执行成功后, 才会执行command2。
1. Declaring an Array and Assigning values In bash, array is created automatically when a variable is used in the format like, name[index]=value name is any name for an array index could be any number or expression that must evaluate to a number greater than or equal to zero.You can ...
其中,array_name是数组的名称,value1、value2、value3...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。...总结在Bash脚本中,获取数组长度是一项常见的操作。本文介绍了四种方法来获取数组长度:使用${#array_name[@...
Using for loop to read an array Any array variable contains a list of data that can be iterated very easily by usingfor-inloop. The following example shows the use offor-inloop to read an array of string data. Here, each array value will fetch in the variable,$languageand print a mes...
Sets variable_name to the "value" of keyword the argument array (see arguments.set) contains "keyword=value".Examplearguments.get_keyword log loglevel Tests>>> local foo >>> arguments.set other_param1 foo=bar baz=baz other_param2 >>> arguments.get_keyword foo foo >>> echo $foo >>>...