Administrator Guide

Table 15. ThinOS system variables (continued)
Variable Description
$UMAC MAC address with uppercase letters is used.
$TN Terminal name
$SUBNET Subnet notation, the format is {network_address}_{network_mask_bits} For example, if
the ip address is 10.151.120.15, network mask is 255.255.255.0, 10.151.120.0_24 is used.
$FIP IP Address with xxx.xxx.xxx.xxx, for example,123.123.123.022
$SN Serial number
$VN Version number
Right($xx, i) or and Left($xx, i) Specifies that the variable is to be read from left or right. The $xx is any of above
parameters and the parameter i specifies the digits for the offset of right or left.
46 Getting started with ThinOS 9.1