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Full Discussion: grep multiple lines
Top Forums Shell Programming and Scripting grep multiple lines Post 302096910 by jOOc on Monday 20th of November 2006 11:26:17 AM
Old 11-20-2006
grep multiple lines
Hi.

I have this format on a textfile:

Code:
VG Name                     /dev/vg00
   PV Name                     /dev/dsk/c16t0d0
   PV Name                     /dev/dsk/c18t0d0
   PV Name                     /dev/dsk/c16t4d0
VG Name                     /dev/vg01
   PV Name                     /dev/dsk/c18t2d0
   PV Name                     /dev/dsk/c16t2d0
VG Name                     /dev/vgsapQ45
   PV Name                     /dev/dsk/vpath8
   PV Name                     /dev/dsk/vpath6
   PV Name                     /dev/dsk/vpath7
   PV Name                     /dev/dsk/vpath5
VG Name                     /dev/vgsapT45
   PV Name                     /dev/dsk/vpath18
   PV Name                     /dev/dsk/vpath16
   PV Name                     /dev/dsk/vpath17



I want to extract the "VG Name" BUT only if the line under have "vpath" in it.

So the output I want is for this:
VG Name /dev/vgsapQ45
VG Name /dev/vgsapT45

I tried using regular expression but cant get it to span across multiple lines.
Anyone have an easy solution for this? awk, grep or egrep ???

/Jocke
 

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LEARN ABOUT OPENSOLARIS

mkdevalloc

mkdevalloc(1M)						  System Administration Commands					    mkdevalloc(1M)

NAME

       mkdevalloc - Make device_allocate entries

SYNOPSIS

       /usr/sbin/mkdevalloc

DESCRIPTION

       The mkdevalloc command writes to standard out a set of device_allocate(4) entries describing the system's frame buffer, audio and removable
       media devices.

       The mkdevalloc command is used by the init.d(4) scripts to create or update the /etc/security/device_allocate file.

       Entries are generated based on the device special files found in /dev. For the different categories  of	devices,  the  mkdevalloc  command
       checks for the following files under /dev:

	 audio		 /dev/audio, /dev/audioctl, /dev/sound/...
	 tape		 /dev/rst*, /dev/nrst*, /dev/rmt/...
	 floppy 	 /dev/diskette, /dev/fd*, /dev/rdiskette, /dev/rfd*
	 removable disk  /dev/sr*, /dev/nsr*, /dev/dsk/c0t?d0s?, /dev/rdsk/c0t?d0s?
	 frame buffer	 /dev/fb

       All  entries  set  the  device-minimum  and device-maximum fields to the hex representations of ADMIN_LOW and ADMIN_HIGH, respectively. The
       device-authorization field is set to solaris.device.allocate, except for the framebuffer entry, where it is  set  to  *.  The  device-name,
       device-type and device-clean fields are set to the following values:

			 device-name	  device-type	device-clean

	 audio		 audio		  audio 	audio_clean_wrapper
	 tape		 mag_tape_0,1,... st		st_clean
	 floppy 	 floppy_0,1,...   fd		disk_clean
	 removable disk  cdrom_0,1,...	  sr		disk_clean
	 frame buffer	 framebuffer	  fb		/bin/true

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Obsolete			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       allocate(1), bsmconv(1M), attributes(5)

NOTES

       mkdevalloc might not be supported in a future release of the Solaris operating system.

SunOS 5.11							    8 Oct 2003							    mkdevalloc(1M)
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