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bashenvironment-variablescommand-substitution

Interpreting command substitution from a variable in bash

For the following value of FOO:

$ FOO='echo `echo hello`'
$ $FOO
`echo hello`

how can I get the expected output:

hello

Basically, how can I interpret a command substitution in the contents of a variable?

Solution

  • Answering the question as given, 

    eval $FOO

    but you're probably going about your real problem the wrong way.