linux - "ambiguous redirect " error in shell script -

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i'm getting "ambiguous redirect " error in shell script if use double quotes suggested getting "ambiguous redirect" error. i'm passing shell variable

awk -f ',' -v grep_values="${grep_value}" '$6==grep_values' file awk -f ',' -v grep_values="${grep_value}" '$6=="${grep_values}"' file

any suggestions.


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