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

On Thu, 2006-06-29 at 16:07 +0100, Chris Bradford wrote:
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?

There are some examples of reading user input here:

http://www.hccfl.edu/pollock/AUnix1/fancyio.htm

Paul.

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