Search for missing data for a given list of stars

"which stars of my list DO NOT have the requested data?",

one should use the command aud and the option -v (by analogy with "fgrep" option -v). This facility is the complement to that described in the previous item.

The correct syntax is: aud -v filename type

• "filename" is the name if the file that contains the star list,
• "type" refers to the data type that is looked for.

Example:

aud -v star.lst coo

displays the star numbers from the list defined by "star.lst" that do not have coordinates.