plan9front/rc/bin/usps

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#!/bin/rc
rfork en
if(! ~ $#* 1) {
echo usage: usps 01601531218002685498 >[1=2]
exit usage
}
rfork e
hget -p 'origTrackNum='^$1 http://trkcnfrm1.smi.usps.com/PTSInternetWeb/InterLabelInquiry.do |
htmlfmt > /tmp/usps.$pid
sam -d /tmp/usps.$pid >[2] /dev/null <<'!'
0,/Label/-1d
/^Enter Label/,$d
,p
!
rm /tmp/usps.$pid