cups - again

[richard lyons <richard@the-place.net>]

There must be a better way!

Further to recent threads on problem of stopping bad printout:  

problem: printer prints many pages of postscript code.  Job won't stop - gives 
an error something about permission-client.  Same problem can occur when, for 
example, printing a 22-page fax and running out of toner in the middle, 
printed job on a different printer to save waiting for new (expensive!) toner 
catridge: once cartridge is replaced, if job is already spooled to the host 
with the printer, it cannot be stopped from the source host.

solution so far: power down printer, delete printer from cups, reinstall and 
power up printer.  This gets rid of the "unstoppable" job.

remaining problem: Often, the new printer will not run.  Error says printer 
port lp0 is blocked (or something similar).  Now it is necessary to reboot 
the host as well.

So, I have two questions:  
 1/  surely there is a way to delete the spool file directly -- it must be 
     somewhere.  I am not talking about the /var/spool/cups/d* file - deleting 
     that does not stop a job from printing necessarily.  The data evidently
     go somewhere else after that.
 2/  surely there is some way to unblock the lp0 port without rebooting the 
     whole system.  This isn't windoze.

Any ideas?

-- 
richard