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Full Discussion: Comnet out line of a file
Top Forums Programming Comnet out line of a file Post 302507954 by ctsgnb on Friday 25th of March 2011 08:36:16 AM
Old 03-25-2011
give more clue : which line do you want to comment? in which file ?

example to comment param3 in a file called "tst" :

Code:
# cat tst
param1
param2
param3
param4
param5

Code:
# printf ",s/^param3.*/# &/\nwq\n" | ed -s tst

Code:
# cat tst
param1
param2
# param3
param4
param5

If you would have to do this for many users, you could easy loop over the corresponding files example to change such a line in a .profile file:

Code:
for i in /home/*/.profile
do
     printf ",s/^param3.*/# &/\nwq\n" | ed -s $i
done

 

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V4L(4)							     Kernel Interfaces Manual							    V4L(4)

NAME
v4l - video4linux driver SYNOPSIS
Section "Module" ... Load "v4l" EndSection DESCRIPTION
v4l is an Xorg driver for video4linux cards. It provides a Xvideo extension port for video overlay. Just add the driver to the module list within the module section of your xorg.conf file if you want to use it. There are no config options. Note that the extmod module is also required for the Xvideo support (and lots of other extensions too). SUPPORTED HARDWARE
The v4l driver works with every piece of hardware which is supported by a video4linux (kernel-) device driver and is able to handle video overlay. bt848/bt878-based TV cards are the most popular hardware these days. CONFIGURATION DETAILS
Please refer to xorg.conf(5) for general configuration details. This section only covers configuration details specific to this driver. SEE ALSO
Xorg(1), xorg.conf(5), xorgconfig(1), Xserver(1), X(7) AUTHORS
Authors include: Gerd Knorr <kraxel@bytesex.org> X Version 11 xf86-video-v4l 0.2.0 V4L(4)
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