- DEVICE=interface_name; - physical interface name
- BOOTPROTO=protocol; - protocol used to obtain IP configuration
- ONBOOT=yes/no - will enable the interface upon reboot.
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The variables are either assigned using "=" or are one of the pre-defined variables (which cannot be assigned to):
$0 name of the shell or the shell script being executed.
$# number of the positional parameters to the command
$1 the value of the first positional parameter passed to the command. $2 is the second positional parameter passed to the command. etc. up to $9.
$* expands to all positional parameters passed to the command
$@ expands to all positional parameters passed to the command, but individually quoted when "$@" is used. " from About.com
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