在脚本的开头,使用declare命令或=操作符声明全局数组。例如: 代码语言:bash 复制 declare-aglobal_array=("value1""value2""value3") 或者 代码语言:bash 复制 global_array=("value1""value2""value3") 在脚本的其他部分,使用${global_array[index]}语法访问数组元素。例如: ...
先用declare -a命令声明一个数组,也是可以的。$ declare -a ARRAYNAMEread -a命令则是将用户的命令行输入,存入一个数组。$ read -a dice上面命令将用户的命令行输入,存入数组dice。读取数组读取单个元素读取数组指定位置的成员,要使用下面的语法。$ echo ${array[i]} # i 是索引...
[ken@Dell-Desktop ~]$declare m=3+3[ken@Dell-Desktop ~]$echo$m3+3[ken@Dell-Desktop ~]$declare -i n=3+3[ken@Dell-Desktop ~]$echo$n6 首先声明了变量i值为3+3,之后打印它发现值“确实”为3+3。接着我们用declare -i的方式,声明变量j,-i的意思是声明一个整数类型的变量,所以我们发现j的值...
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...
当然也有const、global这些属性。 使用declare声明变量的类型。 $ declare -a array # 声明了一个数组 $ declare -i sum=1+2 # sum=3 $ declare -x sum #给sum加入全局属性,即变为全局变量 $ declare +x sum # 取消全局属性 4. 查看变量 使用env(enviroment)查看环境变量。(只显示部分) 使用export...
# Declare array declare -a ARRAY # Link filedescriptor 10 with stdin exec 10<&0 # stdin replaced with a file supplied as a first argument exec < $1 let count=0 while read LINE; do ARRAY[$count]=$LINE ((count++)) done echo Number of elements: ${#ARRAY[@]} ...
# Associative array of plugins and associated subcommands # Order here is same as PLUGIN_OBJS in Makefile typeset -Ar _plugin_subcmds=( [intel]="id-ctrl internal-log lat-stats \ set-bucket-thresholds lat-stats-tracking \ market-name smart-log-add temp-stats" [amzn]="id-ctrl" [memblaze...
# Declare an array named "colors" containing favorite colors colors=("Red", "Blue" "Green" "Purple" "Yellow") # Print the entire array echo "My favorite colors are: ${colors[@]}" Output: My favorite colors are: Red, Blue Green Purple Yellow ...
# Global Declarations declare -rx SCRIPT=${0##*/} # SCRIPT is the name of this script declare -rx who=”/usr/bin/who” # the who command - man 1 who declare -rx sync=”/bin/sync” # the sync command - man 1 sync declare -rx wc=”/usr/bin/wc” # the wc command - man ...
$$ 表示当前运行脚本的进程ID号 $!...:从0开始编号 声明数组: declare -a Array_Name 关联数组: bash从4.0版本起支持关联数组:数组索引可为自定的字符串; declare -A ARRAY_NAME...从键盘让用户输入几个文件,脚本能够将此几个文件归档压缩成一个文件; #!