In /usr/bin/nf-config line 7:
exec_prefix=${prefix}
^---------^ SC2034: exec_prefix appears unused. Verify use (or export if used externally).


In /usr/bin/nf-config line 49:
    exit $1
         ^-- SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
    exit "$1"


In /usr/bin/nf-config line 84:
    -*=*) value=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
                ^-- SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
    -*=*) value=$(echo "$1" | sed 's/[-_a-zA-Z0-9]*=//') ;;


In /usr/bin/nf-config line 85:
    *) value= ;;
       ^---^ SC2034: value appears unused. Verify use (or export if used externally).


In /usr/bin/nf-config line 107:
	echo $cflags
             ^-----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	echo "$cflags"


In /usr/bin/nf-config line 111:
	echo $fflags
             ^-----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	echo "$fflags"


In /usr/bin/nf-config line 127:
       	echo $has_f90
             ^------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
       	echo "$has_f90"


In /usr/bin/nf-config line 135:
       	echo $flibs
             ^----^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
       	echo "$flibs"


In /usr/bin/nf-config line 147:
	echo $version
             ^------^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
	echo "$version"

For more information:
  https://www.shellcheck.net/wiki/SC2034 -- exec_prefix appears unused. Verif...
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...
  https://www.shellcheck.net/wiki/SC2006 -- Use $(...) notation instead of le...