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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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FDFORMAT(8)						     Linux Programmer's Manual						       FDFORMAT(8)

NAME
fdformat - Low-level formats a floppy disk SYNOPSIS
fdformat [-n] device DESCRIPTION
fdformat does a low level format on a floppy disk. device is usually one of the following (for floppy devices, the major = 2, and the minor is shown for informational purposes only): /dev/fd0d360 (minor = 4) /dev/fd0h1200 (minor = 8) /dev/fd0D360 (minor = 12) /dev/fd0H360 (minor = 12) /dev/fd0D720 (minor = 16) /dev/fd0H720 (minor = 16) /dev/fd0h360 (minor = 20) /dev/fd0h720 (minor = 24) /dev/fd0H1440 (minor = 28) /dev/fd1d360 (minor = 5) /dev/fd1h1200 (minor = 9) /dev/fd1D360 (minor = 13) /dev/fd1H360 (minor = 13) /dev/fd1D720 (minor = 17) /dev/fd1H720 (minor = 17) /dev/fd1h360 (minor = 21) /dev/fd1h720 (minor = 25) /dev/fd1H1440 (minor = 29) The generic floppy devices, /dev/fd0 and /dev/fd1, will fail to work with fdformat when a non-standard format is being used, or if the for- mat has not been autodetected earlier. In this case, use setfdprm(8) to load the disk parameters. OPTIONS
-n No verify. This option will disable the verification that is performed after the format. SEE ALSO
fd(4), setfdprm(8), mkfs(8), emkfs(8) AUTHOR
Werner Almesberger (almesber@nessie.cs.id.ethz.ch) AVAILABILITY
The fdformat command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. Linux 0.99 1 February 1993 FDFORMAT(8)
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