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Full Discussion: question about awk
Top Forums Shell Programming and Scripting question about awk Post 302671417 by edstevens on Friday 13th of July 2012 12:16:17 PM
Old 07-13-2012
question about awk
given this:

Code:
[root@vblnxsrv02 setup]# ls -1 /dev/sd[b-z]
/dev/sdb
/dev/sdc
/dev/sdd
/dev/sde
/dev/sdf

returns a list of devices I want to use as input for some other operations. So ...

Code:
[root@vblnxsrv02 setup]# ls -1 /dev/sd[b-z] | awk '{FS="/"; print $3 }' 
 
sdc
sdd
sde
sdf
[root@vblnxsrv02 setup]#

Where I should get sdb, I get a blank line ... everything after is exactly what I want.

When this part is working, I plan to expand it a bit to

Code:
ls -1 /dev/sd[b-z] | awk '{FS="/"; print "some text " $3 " some more text" }' >> afile.lis

I'm open to either tweaking the above or an entirely different approach.
Last edited by Scott; 07-13-2012 at 01:29 PM.. Reason: Code tags
 

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LEARN ABOUT BSD

vgimportclone

VGIMPORTCLONE(8)					      System Manager's Manual						  VGIMPORTCLONE(8)

NAME
       vgimportclone - import and rename duplicated volume group (e.g. a hardware snapshot)

SYNOPSIS
       vgimportclone [-n|--basevgname VolumeGroupName] [-i|--import] PhysicalVolume [PhysicalVolume...]

DESCRIPTION
       vgimportclone is used to import a duplicated VG (e.g. hardware snapshot).  Duplicate VG(s) and PV(s) are not able to be used until they are
       made to coexist with the origin VG(s) and PV(s).  vgimportclone renames the VG associated with the specified PV(s) and changes the  associ-
       ated VG and PV UUIDs.

OPTIONS
       See lvm for common options.

       -n|--basevgname VolumeGroupName
	      By  default  the	snapshot  VG  will be renamed to the original name plus a numeric suffix to avoid duplicate naming (e.g. 'test_vg'
	      would be renamed to 'test_vg1').	This option will override the base VG name that is used for all  VG  renames.	If  a  VG  already
	      exists with the specified name a numeric suffix will be added (like the previous example) to make it unique.

       -i|--import
	      Import exported Volume Groups.  Otherwise VGs that have been exported will not be changed (nor will their associated PVs).

ENVIRONMENT VARIABLES
       LVM_BINARY
	      The LVM2 binary to use.  Defaults to "lvm".

EXAMPLES
       The  origin VG vg00 has origin PVs /dev/sda and /dev/sdb and the respective snapshot PVs are /dev/sdc and /dev/sdd.  To rename the VG asso-
       ciated with /dev/sdc and /dev/sdd from vg00 to vg00_snap (and to change associated VG and PV UUIDs) do:

	    vgimportclone --basevgname vg00_snap /dev/sdc /dev/sdd

SEE ALSO
       lvm(8)

Red Hat, Inc.						 LVM TOOLS 2.02.95(2) (2012-03-06)					  VGIMPORTCLONE(8)
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