Arch Linux

xuehuichao

Member

Registered: 2008-01-15

Posts: 11

In rc.conf, how to specify a parameter with a white space in it?

I'm setting up the wireless network. In rc.conf:

wlan_wlan0="wlan0 essid myessid key mykey"

myessid in my case is something like "ABC DE", I've tried many ways, but it seems all archlinux is doing is to simply split that string with white space characters as deliminaters.

Can any one tell me how to write the correct script in my case? Thank you.

skottish

Forum Fellow

From: Here

Registered: 2006-06-16

Posts: 7,942

Re: In rc.conf, how to specify a parameter with a white space in it?

Something like "ABC\ DE" should work.

xuehuichao

Member

Registered: 2008-01-15

Posts: 11

Re: In rc.conf, how to specify a parameter with a white space in it?

Unfortunately no... It is not working.

I tried:

wlan_wlan0="wlan0 essid ABC\ DE key mykey"
wlan_wlan0='wlan0 essid "ABC DE" key mykey'
wlan_wlan0="wlan0 essid ABC\\ DE key mykey"
wlan_wlan0='wlan0 essid ABC\ DE key mykey'

they won't work...

Sander Hoksbergen

Member

Registered: 2009-01-06

Posts: 32

Re: In rc.conf, how to specify a parameter with a white space in it?

wlan_wlan0="wlan0 essid \"ABC DE\" key mykey"

That should work...I think...

xuehuichao

Member

Registered: 2008-01-15

Posts: 11

Re: In rc.conf, how to specify a parameter with a white space in it?

I reconfigured the router, and changed my essid....

I think the system is splitting the string and passing the parameters to iwconfig. If that is the case, it may not support white space, I think...

Thank you all for your reply

Ranguvar

Member

Registered: 2008-08-12

Posts: 2,549

Re: In rc.conf, how to specify a parameter with a white space in it?

Worst case, I would file a bug report, as there should be a way to do this

sisco311

Member

From: Romania

Registered: 2008-05-23

Posts: 112

Re: In rc.conf, how to specify a parameter with a white space in it?

Worst case, I would file a bug report, as there should be a way to do this

+1
i would try foo\040bar

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brendan

Member

From: UK

Registered: 2009-05-16

Posts: 130

Website

Re: In rc.conf, how to specify a parameter with a white space in it?

Worst case, I would file a bug report, as there should be a way to do this

+1
i would try foo\040bar

This doesn't work either. Anyone got any ideas before I file a bug report?

MoonSwan

Member

From: Great White North

Registered: 2008-01-23

Posts: 881

Re: In rc.conf, how to specify a parameter with a white space in it?

wlan_wlan0="wlan0 essid 'ABC\\ DE' key mykey"

This is the one variant you seem to not have tried. IIRC when using quotes, you need to use one set of quotes and a different set inside of the first quote marks.  Of course I could be wrong but give it a try and see?

diegonc

Member

Registered: 2008-12-13

Posts: 42

Re: In rc.conf, how to specify a parameter with a white space in it?

I think this is not possible.

/etc/rc.d/network

wi_up()
{   
  eval iwcfg="\$wlan_${1}"
  [ "$iwcfg" = "" ] && return 0
  
  /usr/sbin/iwconfig $iwcfg

iwcfg is used unquoted and thus subject to field splitting. The standard doesn't seem to provide any way to switch it off from inside the string being splitted.

Last edited by diegonc (2010-07-09 21:25:16)

ngoonee

Forum Fellow

From: Between Thailand and Singapore

Registered: 2009-03-17

Posts: 7,356

Re: In rc.conf, how to specify a parameter with a white space in it?

@diegonc - good find.

@OP - looks like you should file a bug report

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