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Full Discussion: How to replace a range of text with sed or awk?
Top Forums Shell Programming and Scripting How to replace a range of text with sed or awk? Post 302307201 by TXTad on Wednesday 15th of April 2009 12:43:06 AM
Old 04-15-2009
How to replace a range of text with sed or awk?
Howdy!

I'm trying to automate editing of a configuration file (custom.conf for GDM). I need to find every line between a line that starts with "[daemon]" and the next line that starts with "[". When I find "[daemon]", I want to preserve that line, but then delete all the lines in that configuration section and then insert several new lines of text between the first match ("[daemon]") and the second match ("]").

I suspect that I can do this with sed or at least awk, but I'm not quite sure where to start Can anyone suggest which tool might be better suited to this task and provide some code that accomplishes what I'm talking about?

Thanks,
Tad
 

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LEARN ABOUT REDHAT

gdm-restart

gdm-restart(1m)                                                    User Commands                                                   gdm-restart(1m)

NAME

       gdm-restart, gdm-safe-restart, gdm-stop - stop or restart GDM

SYNOPSIS

       gdm-restart

       gdm-safe-restart

       gdm-stop

DESCRIPTION

       gdm-restart stops and restarts GDM by sending a HUP signal to the GDM daemon. This command immediately terminates all sessions and logs out
       users currently logged in with GDM.

       gdm-safe-restart stops and restarts GDM by sending a USR1 signal to the GDM daemon. GDM is restarted as soon as all users log out.

       gdm-stop stops GDM by sending a TERM signal to the GDM daemon.

FILES

       The following files are used by this application:

       /usr/bin/gdm-restart    Executable to stop and restart GDM

       /usr/bin/gdm-safe-restarExecutable to stop and restart GDM safely

       /usr/bin/stop           Executable to stop GDM

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWgnome-display-mgr        |
       +-----------------------------+-----------------------------+
       |Interface stability          |External                     |
       +-----------------------------+-----------------------------+

SEE ALSO

       Latest version of the GNOME Desktop User Guide for your platform.

       gdm(1), gdmXnestchooser(1), gdmflexiserver(1), gdmphotosetup(1), gdmsetup(1), gdmthemetester(1), gdmconfig(1m)

NOTES

       Written by Brian Cameron, Sun Microsystems Inc., 2004.

SunOS 5.10                                                          1 Sep 2004                                                     gdm-restart(1m)
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