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bless:tldr:4c188
The command is bless
, which is a command-line utility on macOS used to set up the boot process for Mac computers.
--netboot
is an option that tells bless
to enable netbooting. Netbooting allows a Mac computer to start up from a network server instead of its local hard drive.
--server
is another option that specifies the IP address or hostname of the netboot server. ${bsdp:--255-255-255-255}
is an expression used to provide the default server address if it is not explicitly provided. In this case, if the ${bsdp}
variable is not set, the default server address will be 255.255.255.255
.
The --netboot
option, along with the --server
option and its default value, allows the bless
command to enable netbooting and specify the server address for the Mac computer.