launchdaemons and dscl . -create

[Joy]

I have a script that determines if the machines is a laptop or a desktop, and the creates a local group and populates the enetaddress with the correct information. It works when I run from the command line, but fails if I set it up as a launchdaemon.

I have tried putting the plist in both the launchdaemons and launchagents folders, yet it errors out everytime, but I can get into terminal and manually run it with success.

Does anyone have any other idea I can try?

Thanks in advance!

[Greg Neagle]

More data needed.

Mind posting the launchd plist and maybe also the script?

-Greg

[Joy]

Thanks for the reply. Below is the script I’m using and the launchdaemon:

Script
*******
!/bin/sh

macAddress=`/sbin/ifconfig en0 | /usr/bin/grep ‘ether’ | /usr/bin/sed “s/^[[:space:]]ether //” | cut -f1 -d ” “`

echo $macAddress

MACHINE_TYPE=`/usr/sbin/system_profiler SPHardwareDataType | grep “Model Identifier” | grep “Book”`

if [ “$MACHINE_TYPE” = “Book” ]; then
computerRecordName=Laptop
else
computerRecordName=Desktop
fi

/usr/bin/dscl . -create /computers/$computerRecordName ENetAddress $macAddress

echo “was: $storedMacAddress”
echo “now: $macAddress”

Launchdaemon
****


Label
com.attrsetup.sh
ProgramArguments

/Library/Scripts/Custom/attrsetup.sh

RunAtLoad

[Greg Neagle]

Let’s see.

The first line of the script has an illegal line (maybe the forum software munged it?). It should be

[code]#!/bin/sh[/code]

Is the script marked as executable?

The forum software munged the launchd plist, so it’s hard to guess what else might be at issue.
When you say you can run it from the command line, how do you invoke it?

-Greg

[Joy]

Hi Greg,

First, big THANKS for all your articles. I refer to them a LOT!

Next, yes, I do have the #!/bin/sh as my first line. I failed to grab all the text in my copy/paste.

Third, yes, the forum did mess up my plist. I’m trying it again. When I drop to the command line, I type in sudo ./attrsetup.sh and it runs perfectly, every time. To make it an executable, I typed the following chmod a+x path/to/script. Is this correct?

“

Label
com.attrsetup.sh
ProgramArguments

/Library/Scripts/Custom/attrsetup.sh

RunAtLoad
”

Joy

[Joy]

So much for that try on the plist.

xml version=”1.0″ encoding=”UTF-8″
DOCTYPE plist PUBLIC “-//Apple//DTD PLIST 1.0//EN” “http://www.apple.com/DTDs/PropertyList-1.0.dtd dict
key ,Label key
string com.attrsetup.sh string
key ProgramArguments key
array
string /Library/Scripts/Custom/attrsetup.sh string
array
key RunAtLoad key
true
dict
plist

[Joy]

and if it is of any help, here is what Console has to say about everything:

5/4/10 2:57:51 PM com.attrsetup.plist[112] 00:1f:5b:ea:90:89
5/4/10 2:57:52 PM com.attrsetup.plist[112]

attribute status: eDSPermissionError
5/4/10 2:57:52 PM com.attrsetup.plist[112] DS Error: -14120 (eDSPermissionError)
5/4/10 2:57:52 PM com.attrsetup.plist[112] was:
5/4/10 2:57:52 PM com.attrsetup.plist[112] now: 00:1f:5b:ea:90:89

[Joy]

[code]


Label
com.attrsetup.sh
ProgramArguments

/Library/Scripts/Custom/attrsetup.sh

RunAtLoad
[/code]

[Greg Neagle]

And you have this in /Library/LaunchDaemons/ ?

The permissions errors would imply that the script is running as a user other than root…

-Greg

[Joy]

I found the issue. It was a permissions error, but I also had to delay the launchd, because the ethernet wasn’t going active before the script ran so the macaddress was always nothing.

Thanks for the direction!!

[Author]

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