cgi
file upload
#!/bin/sh
echo "Content-Type: text/plain"
echo ""
read boundary
read disposition
read ctype
read junk
size=$(( ${#boundary} + 5 ))
head -c -$size > "/tmp/upload.tmp"
echo "done"
https://ncrmnt.org/2013/04/18/someblack-magic-bash-cgi-and-file-uploads/