I am defining the following variables inside a bash script (note: I ultimately want to pass these values to the bash script from the commandline but I haven't gotten that far yet):

OFS=','
INPUTFILE='~/data.txt'
OUTPUTFILE='~/delimited.txt'
FIELDWIDTHS='1 10 4 2 2'

Next, inside the bash script I'm attempting to call an awk script and pass it these same values:

echo
echo | awk -v FIELDWIDTHS=$FIELDWIDTHS -v OFS=$OFS
 -v INPUTFILE=$INPUTFILE -v OUTPUTFILE=$OUTPUTFILE
 -f ~/bin/fixedWidthToDelimited.awk

The awk script doesn't seem to be able to understand correctly what's being passed to it, I keep getting fatal errors. Can someone please help me understand how to do this? Thanks!

It would be better to let the shell expand the tilda by removing the quotes or use $HOME with double quotes, because awk probably doesn't expand a tilda.

Quote the variable references:

awk -v FIELDWIDTHS="$FIELDWIDTHS" -v OFS="$OFS" -v INPUTFILE="$INPUTFILE" -v OUTPUTFILE="$OUTPUTFILE"