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In my Bash environment I use variables containing spaces, and I use these variables within command substitution. Unfortunately I cannot find the answer on SE.

What is the correct way to quote my variables? And how should I do it if these are nested?

DIRNAME=$(dirname "$FILE")

or do I quote outside the substitution?

DIRNAME="$(dirname $FILE)"

or both?

DIRNAME="$(dirname "$FILE")"

or do I use back-ticks?

DIRNAME=`dirname "$FILE"`

What is the right way to do this? And how can I easily check if the quotes are set right?

In my Bash environment I use variables containing spaces, and I use these variables within command substitution.

What is the correct way to quote my variables? And how should I do it if these are nested?

DIRNAME=$(dirname "$FILE")

or do I quote outside the substitution?

DIRNAME="$(dirname $FILE)"

or both?

DIRNAME="$(dirname "$FILE")"

or do I use back-ticks?

DIRNAME=`dirname "$FILE"`

What is the right way to do this? And how can I easily check if the quotes are set right?

In my Bash environment I use variables containing spaces, and I use these variables within command substitution. Unfortunately I cannot find the answer on SE.

What is the correct way to quote my variables? And how should I do it if these are nested?

DIRNAME=$(dirname "$FILE")

or do I quote outside the substitution?

DIRNAME="$(dirname $FILE)"

or both?

DIRNAME="$(dirname "$FILE")"

or do I use back-ticks?

DIRNAME=`dirname "$FILE"`

What is the right way to do this? And how can I easily check if the quotes are set right?

In my Bash environment I use variables containing spaces, and I use these variables within command substitution. Unfortunately I cannot find the answer on SE.

What is the correct way to quote my variables? And how should I do it if these are nested?

DIRNAME=$(dirname "$FILE")

or do I quote outside the substitution?

DIRNAME="$(dirname $FILE)"

or both?

DIRNAME="$(dirname "$FILE")"

or do I use back-ticks?

DIRNAME=`dirname "$FILE"`

What is the right way to do this? And how can I easily check if the quotes are set right?