05-18-2010
nested double quota and white space inside variable
I have a question about nested double quotes. Any help is appreciated.
Here are my commands on Mac OS.
# string="Ethernet \"USB Ethernet\" \"Bluetooth DUN\" AirPort FireWire \"Bluetooth PAN\""
# echo $string
Ethernet "USB Ethernet" "Bluetooth DUN" AirPort FireWire "Bluetooth PAN"
# networksetup -ordernetworkservices $string - This gives error.
The networksetup command requires quote around service name that has space in it.
But when shell expands the $string that has nested quotes, it treats the string that has quote around it as two separate words. In this case, "USB Ethernet" becomes 'USB' 'Ethernet'. What I really want is "USB Ethernet".
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LEARN ABOUT FREEBSD
if_smsc
SMSC(4) BSD Kernel Interfaces Manual SMSC(4)
NAME
smsc -- USB SMSC LAN9xxx Fast Ethernet driver
SYNOPSIS
To load the driver as a module at boot time, place the following line in loader.conf(5):
if_smsc_load="YES"
Alternatively, to compile this driver into the kernel, place the following lines in your kernel configuration file:
device uhci
device ohci
device usb
device miibus
device smsc
DESCRIPTION
The smsc device driver provides support for USB Fast Ethernet adapters based on the SMSC LAN9xxx chipsets.
For more information on configuring this device, see ifconfig(8).
HARDWARE
The following devices are supported by the smsc driver:
o SMSC LAN9500, LAN9500A, LAN9505 and LAN9505A based Ethernet adapters
o SMSC LAN89530, LAN9530 and LAN9730 based Ethernet adapters
o SMSC LAN951x Ethernet adapters with integrated USB hub
SEE ALSO
arp(4), intro(4), miibus(4), netintro(4), usb(4), ifconfig(8)
HISTORY
The smsc device driver first appeared in FreeBSD 10.0.
AUTHORS
The smsc driver was written by Ben Gray <bgray@FreeBSD.org>.
BSD
September 26, 2014 BSD