The link for the mtx-changer.txt shell script does not work.
\elink could work if a full path to http:// URL was used.
Also maybe include this in book appendix and point to it.
Could just copy the script from source and make a tex page out of it.
Bacula supports a variety of tape changers through the use of mtx-changer
scripts/programs. This highly flexible approach allowed me to create
\ilink{this shell script}{mtx-changer.txt} which does the following:
+% TODO: This link doesn't work; also need to include this in book appendix
+% TODO: and point to it.
Whenever a new tape is required it sends a mail to the operator to insert the
new tape. Then it waits until a tape has been inserted, sends a mail again to
say thank you and let's bacula continue its backup.