-Join (String1,String2,String3...) 不使用分隔符连接字符串

String1,String2,String3… -Join "Delimiter" 使用分隔符连接字符串

$a=-Join("abc","def","ghi")

$b="abc","def","ghi" -Join ":"

$string1="abc"

$string2=$string1*3

$string2

二、分隔字符串

-Split String 根据空格分隔字符串

String -Split "Delimiter" [,MaxSubStrings] 根据指定分隔符分隔字符串

$a="abc def ghi"

-Split $a

$a="abc:def:ghi"

$a -Split ":"