The thradd program is called from the command line as follows:
thradd [-d] [-f file_name]
where:
-d
Causes the entries in the file and the tree /C=it/O=sni/OU=ap are deleted; otherwise, they are added.
-f file_name
Specifies the name of the input file. If no input file is specified, then a default filename of thradd.dat is used.