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How to substitue string withing string in shell 

mode="create"
echo $mode

what i am trying is 

echo ${CONFIG_Resource_$mode_val}

which gives me "bad substitution"

but this works fine 

echo ${CONFIG_Resource_create_val}
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  • 1
    What other variables do you have declared? I'm confused. What do you want to do? What is the desired output? Commented Dec 20, 2017 at 16:35
  • Basically I am reading yaml file and fetching the value. This works fine - ${CONFIG_Resource_create_val}... where "create" is mode" .My mode can be "create, build, run.... and so on. Commented Dec 20, 2017 at 16:37
  • so echo ${CONFIG_Resource_build_val}, echo ${CONFIG_Resource_run_val} should give me values. Commented Dec 20, 2017 at 16:38
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