ud - Utility for replacing elements by id within html files.

Quick start

go get -u github.com/gregoryv/ud

Replace an element by id

echo "<em>new thing</em>" | ud -w -i "someid" -html index.html

which is same as

echo '<em id="someid">new thing</em>' | ud -w -html index.html

Note! when -i flag is not given -c has no effect, it will always replace the identified element.

Replace content of element by id use the -c flag

echo "<em>new thing</em>" | ud -w -c -i "someid" -html index.html

Primary usecase

The primary reason for this tool was to simply generate and update image maps within html when working with graphviz documents

dot -Tcmapx somegraph.dot | ud -w -html index.html