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Top Forums Shell Programming and Scripting Comparing text in 2 files and output difference in another file. Post 302622841 by kashif.live on Thursday 12th of April 2012 04:20:49 PM
Old 04-12-2012
Comparing text in 2 files and output difference in another file.

I have 2 files of almost same text apart from 2,3 ending lines. Now I want to get that difference in another file.
e.g file1.txt is

Code:
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_livecd-lv_root
                       18G  2.4G   15G  14% /
tmpfs                 504M  264K  504M   1% /dev/shm
/dev/sda1             485M   32M  429M   7% /boot

and file2.txt is:

Code:
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_livecd-lv_root
                       18G  2.4G   15G  14% /
tmpfs                 504M  264K  504M   1% /dev/shm
/dev/sda1             485M   32M  429M   7% /boot
/dev/sdb1             7.5G  249M  7.3G   4% /media/alpha
/dev/sdc1             3.8G  1.1G  2.8G  28% /media/9C6F-1ECD


Now I want to get ending 2 lines in another file say file3.txt that is basic difference in this file.

Moderator's Comments:
Mod Comment Code tags for code, please.

Last edited by Corona688; 04-12-2012 at 05:24 PM.. Reason: modified.
 

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

NAME
pvresize - resize a disk or partition in use by LVM2 SYNOPSIS
pvresize [-d|--debug] [-h|--help] [-t|--test] [-v|--verbose] [--version] [--setphysicalvolumesize size] PhysicalVolume [PhysicalVolume...] DESCRIPTION
pvresize resizes PhysicalVolume which may already be in a volume group and have active logical volumes allocated on it. OPTIONS
See lvm(8) for common options. --setphysicalvolumesize size Overrides the automatically-detected size of the PV. Use with care, or prior to reducing the physical size of the device. EXAMPLES
Expand the PV on /dev/sda1 after enlarging the partition with fdisk: pvresize /dev/sda1 Shrink the PV on /dev/sda1 prior to shrinking the partition with fdisk (ensure that the PV size is appropriate for your intended new parti- tion size): pvresize --setphysicalvolumesize 40G /dev/sda1 RESTRICTIONS
pvresize will refuse to shrink PhysicalVolume if it has allocated extents after where its new end would be. In the future, it should relo- cate these elsewhere in the volume group if there is sufficient free space, like pvmove does. pvresize won't currently work correctly on LVM1 volumes or PVs with extra metadata areas. SEE ALSO
lvm(8), pvmove(8), lvresize(8), fdisk(8) Sistina Software UK LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) PVRESIZE(8)
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