AS 680/682
Basic Installation LCMS/RCMS Description, Operation and Maintenance
ADS−B
8−16 Ed. 10.07
8.5 ADDITIONAL INSTALLATION INFORMATION
8.5.1 User/Groups
The applications on the LCMS/RCMS require the groups ’supervisor’ and ’monitor’. The installation
of the lcms/rcms software creates these groups. Further, the default users ’supervisor’ and ’monitor’
are created automatically.
If the customer wants to create further users, this section describes the creation of these users, if there
is any need to perform it manually. To create further accounts the following procedures can be used.
If not already existing, create the groups monitor and supervisor:
/usr/sbin/groupadd −f monitor
/usr/sbin/groupadd −f supervisor
If not already done, change/create user accounts to have at least the default accounts according the
following table:
Machine
Account Group
LCMS monitor users, monitor
LCMS supervisor users, supervisor, uucp
RCMS monitor users, monitor
RCMS supervisor users, supervisor
E.g.: To create a user ‘smith’ with monitor permission the following commands can be used:
/usr/sbin/useradd −g users −G monitor smith
/usr/sbin/passwd smith
/usr/sbin/usermod −G monitor,uucp monitor
8.5.2 Xfce Setup
Every user has to use the desktop ’Xfce4’. Execute the following command by each user:
Login as ’user’:
switchdesk xfce
After a new graphical login the ’Xfce4’ desktop should be active.
8.5.3 Data Partition
The partition which is mounted under /local should be used to store data files.
NOTE: It is not recommended to store data files in the /tmp directory.
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