The addid command opies an HTML or XML file to standard output, while adding element IDs to the specified elements or classes.

For example, given the input

<p>A paragraph without an ID</p>

the command

addid p

will output

<p id="a-paragraph">A paragraph without an ID</p>

If you specify a class using .class then IDs will only be added to elements that contain that class. And if you specify a element and a class using elem.class then IDs will only be added to the specified elements that contain the specified class.

If two elements would naturally generate the same ID, a number is added to the ID name (starting with 0) to make sure the IDs are unique. IDs are not added to matching elements that already contain an ID.

-x

Use XML conventions: empty elements are written with a slash at the end: <IMG /> Also causes the name of the attribute (see option -a) to become case-sensitive.

elem

The name of element to select.

.class

The name of class to select.

elem.class

The name of element that contains class to select.

html-file

The name of an HTML file.

0

Successful completion.

>0

An error occurred in the parsing of one of the HTML or XML files.

Assumes UTF-8 as input. Doesn't expand character entities. Instead pipe the input through unent(1) and asc2xml(1) to convert it to UTF-8.