I have tab delimited file and need to remove all records prior to sort, that have non-numerics in the Field 2. valid/invalid field 2 data examples are:
" 123" valid
"1 23" invalid
" NOPE" invalid

I've tried this awk it does not recognize tab as the delimiter or check all characters in field 2:
awk -Ftab '$1 ~ /^[0-9]/ { print $1 }'<$ebs_filter_file

I've also played around with sed, but can't seem to get it. Any help would be appreciated!

akxeman