concat string in a shell script

2018-06-09 17:44:57

This question already has an answer here:

How to concatenate string variables in Bash 27 answers

这个怎么样：

var="${var}string"

它取决于shell，但是因为问题被标记为bash：

var='my'
var=$var'string'

没有。出于各种原因。

# most sh-compatible shells
var="my"
var="$var string"

# advanced shells
var="my"
var+=" string"

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