7 Access to OS

<..unix t4ht commands..>
 % t4ht -d%%2                                                        %
 Mmv %%1 %%2%%3
 Ccp %%1 %%2%%3
 % t4ht -d%%2 -m%%1                                                  %
 Achmod %%1 %%2%%3
 % removed protection                                                %
 S*
 -_-_-

<..my t4ht commands..>
 % t4ht -d%%2                                                        %
 Mmv %%1 %%2%%3
 Ccp %%1 %%2%%3
 % t4ht -e%%1 -d%%2                                                  %
 Ecp empty.png %%1%%2
 % t4ht -d%%2 -m%%1                                                  %
 Achmod %%1 %%2%%3
 % removed protection                                                %
 S*
 -_-_-

<..dos t4ht commands..>
 % t4ht -d%%2                                                        %
 Mmove %%1 %%2%%3
 Ccopy %%1 %%2%%3
 % removed protection                                                %
 S*
 -_-_-

Note: the permission option ‘S’ takes into account also trailing spaces.