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Full Discussion: grep multiple lines
Top Forums Shell Programming and Scripting grep multiple lines Post 302096943 by reborg on Monday 20th of November 2006 07:45:34 PM
Old 11-20-2006
sure thing
Code:
sed -n '/^VG/{N;/vpath/s/\n.*//p}'

/^VG/ - search for lines starting with VG
{} - apply the enclosed when the preceeding match is made
N - append the next line to the pattern buffer
/vpath/ - search for vpath within the pattern buffer
s/\n.*//p - delete everything following the first \n then print the buffer.

depending on the system the code may aso need to be written as below becasue \n may not always be recognised.

Code:
sed -n '/^VG/{N;/vpath/s/
.*//p}'

 

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LEARN ABOUT OSX

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 5.10                                                          8 Oct 2003                                                      mkdevalloc(1M)
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