Enable/Disable all drives on a TiNa catalog – Mettre en service/ Hors service les drives d’un catalogue TiNa

Useful for sensitive operations on a Time navigator catalog:
Utile pour des opération sensibles sur un catalogue Time Navigator :

tina_shell -catalog mycat1
# list all drives in a handler list
list Drive in L_DRIVE
# loop on each handler drive
foreach DRIVE in L_DRIVE
# modify the enable parameter
assign DriveEnable TRUE
set DRIVE
endfor
quit