Concat strings in a shell script [duplicate]

Question

How can I concat strings in shell? Is it just...

var = 'my';
var .= 'string';

?

FYI variables in bash can't have spaces around the =. It has to be next to the name and the value. — Daenyth
– Daenyth, Commented Feb 25, 2012 at 16:10

cnicutar · Accepted Answer · 2012-02-25 15:21:48Z

89

How about this:

var="${var}string"

answered Feb 25, 2012 at 15:21

cnicutar

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Comments

Mariusz Jamro · Accepted Answer · 2012-02-26 13:32:50Z

30

It depends on the shell, but since question was tagged bash:

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

Mariusz Jamro

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answered Feb 25, 2012 at 15:23

dldnh

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Ignacio Vazquez-Abrams · Accepted Answer · 2012-02-25 15:22:45Z

11

No. For various reasons.

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

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

answered Feb 25, 2012 at 15:22

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