These lines explain what is and how to use the ICE's Job Cancellation tool: '''@@glite-wms-ice-rm@@''' (usually located in @@/opt/glite/bin@@ ).
When a site admin needs to cancel one or more jobs managed by ICE she/he can use this command. It will read needed information from ICE's database to send the JobCancel request to CREAM for a given Grid JobID (or for more jobs).

The first and mandatory parameter to specify is the WMS configuration file name (usually @@glite_wms.conf@@) as argument of the switch @@--conf|-c@@. Then it must be specified one or more grid jobids that the admin wants to cancel:

->'''@@glite-wms-ice-rm -c glite_wms.conf <GID1> [GID2 ...]@@'''

At least one @@<GID>@@ must be provided. 

The other possibility for the administrator is to ask the cancellation of all jobs currently managed by ICE. This is achieved specifying @@--all|-a@@ instead of @@<GID1>@@. 

It is also possible to specify the grid jobids to be cancelled on a file (to be specified as argument of the switch @@--from-file@@). In this case @@glite-wms-ice-rm@@ will check that the jobids specified in that file actually exist in the ICE's database; for the non-existing jobs an error message will be printed, while the cancel
is done for the existing ones.

->'''@@glite-wms-ice-rm -c glite_wms.conf --all@@'''

->'''@@glite-wms-ice-rm -c glite_wms.conf --from-file joblist@@'''