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:
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:
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
I want to list all files created in a day but it doesn't work
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$ echo $day
>>> 'Mar 12'
$ ll |grep $day
>>> can't open 12'
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Discussion started by: Pushpraj
10 Replies
LEARN ABOUT OSX
blockdev
BLOCKDEV(8) System Administration BLOCKDEV(8)NAME
blockdev - call block device ioctls from the command line
SYNOPSIS
blockdev [-q] [-v] command [command...] device [device...]
blockdev --report [device...]
blockdev -h|-V
DESCRIPTION
The utility blockdev allows one to call block device ioctls from the command line.
OPTIONS -q Be quiet.
-v Be verbose.
--report
Print a report for the specified device. It is possible to give multiple devices. If none is given, all devices which appear in
/proc/partitions are shown. Note that the partition StartSec is in 512-byte sectors.
-h, --help
Display help text and exit.
-V, --version
Print version and exit.
COMMANDS
It is possible to give multiple devices and multiple commands.
--flushbufs
Flush buffers.
--getalignoff
Get alignment offset.
--getbsz
Print blocksize in bytes.
--getdiscardzeroes
Get discard zeroes support status.
--getfra
Get filesystem readahead in 512-byte sectors.
--getiomin
Get minimum I/O size.
--getioopt
Get optimal I/O size.
--getmaxsect
Get max sectors per request
--getpbsz
Get physical block (sector) size.
--getra
Print readahead (in 512-byte sectors).
--getro
Get read-only. Print 1 if the device is read-only, 0 otherwise.
--getsize64
Print device size in bytes.
--getsize
Print device size (32-bit!) in sectors. Deprecated in favor of the --getsz option.
--getss
Print logical sector size in bytes - usually 512.
--getsz
Get size in 512-byte sectors.
--rereadpt
Reread partition table
--setbsz bytes
Set blocksize. Note that the block size is specific to the current file descriptor opening the block device, so the change of block
size only persists for as long as blockdev has the device open, and is lost once blockdev exits.
--setfra sectors
Set filesystem readahead (same like --setra on 2.6 kernels).
--setra sectors
Set readahead (in 512-byte sectors).
--setro
Set read-only. The currently active access to the device may not be affected by the change. For example filesystem already mounted
in read-write mode will not be affected. The change applies after remount.
--setrw
Set read-write.
AUTHOR
blockdev was written by Andries E. Brouwer and rewritten by Karel Zak.
AVAILABILITY
The blockdev command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/.
util-linux August 2010 BLOCKDEV(8)