[SOLVED] sed to add between two pattern

essahar · 04-08-2012, 02:31 AM

Hello all

I have an xorg.conf file and I want to add some extra setting in a section below is the file

Quote:

Section "InputDevice"

# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "ServerLayout"
Identifier "single head configuration"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
Option "Xinerama" "0"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

I want to add after the 'Section "ServerLayout"' and just above the first occurrence of EndSection the below line:

Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"

I appreciate your help

repo · 04-08-2012, 02:46 AM

Deleted answer, didn't see the "sed" part of the question.

essahar · 04-08-2012, 02:50 AM

Thanks for the answer

but I have to add this for more than 1000 Linux workstations and the file is not the same in all of them

druuna · 04-08-2012, 02:59 AM

Hi,

Here is one way using sed:

Code:

sed '/Section "ServerLayout"/,/EndSection/s/EndSection/Option "BlankTime" "0"\nOption "StandbyTime" "0"\nOption "SuspendTime" "0"\nOption "OffTime" "0"\nEndSection/' xorg.conf

Quote:

Originally Posted by essahar

but I have to add this for more than 1000 Linux workstations

Edit one instance and copy that one to the other machines.

Hope this helps.

jschiwal · 04-08-2012, 03:19 AM

Code:

/Section "ServerLayout"/,/^$/{ /EndSection/i\
Option "BlankTime" "0"\
Option "StandbyTime "0"\
Option "SuspendTime" "0"\
Option "OffTime" "0"
}

You might want the first range to be /Section "ServerLayout"/,/EndSection/ instead. ServerLayout might not be the last section before a blank line in all hosts.

firstfire · 04-08-2012, 03:34 AM

Hi.

Here is a ed(1) script

Code:

/ServerLayout/
/EndSection/
i
Option "BlankTime" "0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
.
,p
#wq

Save it to some file, say, ins.ed and do

Code:

ed xorg.conf < ins.ed

Uncomment last line to write changes to file. The ,p command just prints the whole file to stdout.

essahar · 04-08-2012, 05:11 AM

Thanks everyone, I will write "jschiwal" command into a script and run it from a NFS folder mounted by all workstations.