Re: [Help-bash] Is there a way to contract y=${x[*]}; "${y// /}" into one line

[Stephane Chazelas]

2016-05-27 15:58:07 -0500, Peng Yu:
> Hi, I use the following code to remove spaces from the string of
> "${x[*]}". But it requires two lines. Is there a way to do it in one
> line? Thanks.
> 
> x=(a b c)
> y=${x[*]}
> echo "${y// /}"
[...]

"${x[*]}" joins the elements of the x array with the first
character of IFS.

So

IFS=; echo "${x[*]}"

You can also do:

printf %s "address@hidden"

With zsh:

echo $((j[])x}

(j for join).

Or if you want to remove all spaces including those in the
array elements:

echo ${"${x}"// }

-- 
Stephane