ref: wiki
filters/html-converters/txt2html
#!/bin/sh echo "" sed "s|&|\\&|g;s|'|\\'|g;s|\"|\\"|g;s|<|\\<|g;s|>|\\>|g" echo ""
" sed "s|&|\\&|g;s|'|\\'|g;s|\"|\\"|g;s|<|\\<|g;s|>|\\>|g" echo "