[[ -z "$o_t" ]] && o_t='ext3' # default to ext3 if -t is not given
[[ "$o_v" == 'true' ]] && awk_field=0 # $0 is the whole line
[[ -z "$o_t" ]] && o_t='ext3' # default to ext3 if -t is not given
[[ "$o_v" == 'true' ]] && awk_field=0 # $0 is the whole line