Add to text file from command line via echo... possible to add to a particular line?[Scanned]

[Chris Bradford]

Paul Howarth wrote:
> On Thu, 2006-06-29 at 07:42 +0100, Chris Bradford wrote:
>   
>> Hi guys,
>>
>> I'm making a setup script for my Linux boxes that re-install Openldap 
>> and some other bits and bobs. I need to add some text to /etc/pam.d/gdm 
>> for example, and it needs to be on a particular line in this file, not 
>> at the bottom.
>>
>> For example using the command:
>>
>> echo 'session   required   pam_mkhomedir.so skel=/etc/skel umask=0077' 
>>  >> /etc/pam.d/gdm
>>
>> Will only add this to the bottom of the file, can I get around this, it 
>> needs to be on the same position on all machines, ie line 8.
>>     
>
> How about:
>
> awk '	NR == 8 {
> 		printf "session    required     pam_mkhomedir.so skel=/etc/skel
> umask=007\n"
> 	}
> 	{ print }' /etc/pam.d/gdm > /etc/pam.d/gdm.new
> mv /etc/pam.d/gdm.new /etc/pam.d/gdm
>
> Paul.
>
>   
Paul,

Thats got it thanks :) I don't suppose there is a simple way to put a 
yes/no question into the script, if answered yes another script will be 
called, if no then its not?

Thanks again,

-Chris


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