Post Closed as "Duplicate" by terdon♦ bash

occurred Mar 1, 2019 at 18:22

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edited Mar 1, 2019 at 17:28

Given I have in a bash script

ev=USER

How can I get the environment variable value for $USER using ev?

Tried naively doing:

echo ${"$"$ev}

which results in bad substitution.

I'd expect to get back whatever the value of $USER is.

thanks

Given I have in a bash script

ev=USER

How can I get the environment variable value for $USER using ev?

Tried naively doing:

echo ${"$"$ev}

which results in bad substitution.

I'd expect to get back whatever the value of $USER is.

thanks

Given I have in a bash script

ev=USER

How can I get the environment variable value for $USER using ev?

Tried naively doing:

echo ${"$"$ev}

which results in bad substitution.

I'd expect to get back whatever the value of $USER is.

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occurred Mar 1, 2019 at 15:00

Became Hot Network Question

occurred Mar 1, 2019 at 10:51

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edited Mar 1, 2019 at 10:30

Kusalananda ♦

bash variable

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asked Mar 1, 2019 at 10:21

PaulB

Indirectly access environment variable

Given I have in a bash script

ev=USER

How can I get the environment variable value for $USER using ev?

Tried naively doing:

echo ${"$"$ev}

which results in bad substitution.

I'd expect to get back whatever the value of $USER is.

thanks

bash

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