Reference variable in alias

Question

I want to define an alias which references an environment variable in real time. For example, how can I make an alias to echo the value of N?

$ N=4
$ alias sayn="echo $N"
$ N=2
$ sayn
4

Aaron · Accepted Answer · 2017-02-22 16:06:48Z

3

Since you define your alias using double quotes, the $N is expanded before definition and your alias actually is echo 4.

Try this :

$N=4
$alias sayn='echo $N'
$N=2
$sayn
2

answered Feb 22, 2017 at 16:06

Aaron

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