I am trying to create an bash script to expand a LVM disk, I mean, trying to automatize all the process from the video bellow:
Youtube search:
How To Extend LVM Disk For Linux Virtual Machine On VMware
At this point, I am very new in bash script and I am facing this just as a try, I don't know if I will get the final result that I need.
Well, I am stuck at the grep option bellow:
Code:
#!/bin/bash
# Increase LVM Disk
echo"$(fdisk -l)"
echo Which disk you want to increase the size? "(Please provide the full path, Example: /dev/sda2):"
read disk1
diskcompare="$(fdisk -l | grep "$disk1 " -o --max-count=1)"
if [ "$diskcompare" == "$disk1 " ]; then
echo"Valid Disk."
else
echo"Invalid Disk."
fi
I would like to compare the path (disk1) with the fdisk -l command to check if it is a valid disk.
The problem is that the way that it is writed at the moment it accept you to continue the script if you not type the entire path, example:
Code:
[root@linuxtest ~]# ./test.sh
Disk /dev/sda: 16.1 GB, 16106127360 bytes, 31457280 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000d345c
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 16777215 7339008 8e Linux LVM
/dev/sda3 16777216 31457279 7340032 8e Linux LVM
Disk /dev/mapper/centos-root: 14.2 GB, 14164164608 bytes, 27664384 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-swap: 859 MB, 859832320 bytes, 1679360 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Which disk you want to increase the size? (Please provide the full path, Example: /dev/sda2):
/sda2
Valid Disk.
[root@linuxtest ~]#
It should match only the exactly values /dev/sda1 , /dev/sda2 or /dev/sda3.
Any help will be welcomed
Ty!
Last edited by Scrutinizer; 03-12-2020 at 09:14 AM..
Reason: quote tags -> code tags; Removed non-existing-font definition; Removed multi-color
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LEARN ABOUT DEBIAN
dgrep
DGREP(1) Debian-goodies documentation DGREP(1)NAME
dgrep, degrep, dfgrep, dzgrep -- grep through files belonging to an installed Debian package
SYNOPSIS
dgrep [most grep options] pattern package...
dgrep --help
DESCRIPTION
dgrep invokes grep(1) on each file in one or more installed Debian packages.
It passes the package argument(s) to dglob(1) to retrieve a list of files in those packages. You can use POSIX regular expressions for the
package names.
If dgrep is invoked as degrep, dfgrep or dzgrep then egrep(1), fgrep(1) or zgrep(1) is used instead of grep.
OPTIONS
dgrep supports most of grep(1)'s options. Please refer to your grep documentation (i.e. the manpage or the texinfo manual) for a complete
listing. Only a few options are excluded because they do not conform with the intended behaviour, see the list below.
Options of grep that are not supported by dgrep
-r, --recursive, -d recurse, --directories=recurse
-d read, --directories=read
dgrep searches only in the "normal" files of a package. It skips all directories and symlinks. Therefor the options of grep that are
specific to directories are not supported.
AUTHOR
Matt Zimmerman <mdz@debian.org>
This manpage was written by Frank Lichtenheld <frank@lichtenheld.de>.
COPYRIGHT AND LICENCE
Copyright (C) 2001 Matt Zimmerman <mdz@debian.org>.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option) any later version.
On Debian systems, a copy of the GNU General Public License may be found in /usr/share/common-licenses/GPL.
SEE ALSO grep(1), egrep(1), fgrep(1), zgrep(1), dglob(1), regex(7), dpkg(8)perl v5.14.2 2012-03-21 DGREP(1)
03-12-2020
