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Full Discussion: [bash] remove some entries from output
Top Forums Shell Programming and Scripting [bash] remove some entries from output Post 303027015 by apmcd47 on Friday 7th of December 2018 04:53:50 AM
Old 12-07-2018
You need jq installed for this. The maintainers describe jq as a sed-like tool for json files.
Code:
$ sudo lshw -class disk -json | jq -c . | grep size | jq '{product,logicalname,size}'
{                         
  "product": "Backup+  Desk",
  "logicalname": "/dev/sda",
  "size": 3000592977920
}
{
  "product": "Micron_M510_2.5_",
  "logicalname": "/dev/sdb",
  "size": 256060514304
}

The first instance of jq minimises the output to one device per line. sed is then used to reduce the output to only devices with a size field. jq is used once again to pull out the product name, logical name and size for each remaining device. You can then use awk or some other tool to reformat the output into something more palatable, if you desire.

jq will probably be in your Linux repository and should be easy to install.

Andrew
 

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LEARN ABOUT SUSE

mkfs.minix

MKFS.MINIX(8)						Linux System Administrator's Manual					     MKFS.MINIX(8)

NAME

       mkfs.minix - make a Linux MINIX filesystem

SYNOPSIS

       mkfs.minix [-c|-l filename] [-n namelength] [-i inodecount] [-v] device [size-in-blocks]

DESCRIPTION

       mkfs.minix creates a Linux MINIX file-system on a device (usually a disk partition).

       The device is usually of the following form:

	      /dev/hda[1-8] (IDE disk 1)
	      /dev/hdb[1-8] (IDE disk 2)
	      /dev/sda[1-8] (SCSI disk 1)
	      /dev/sdb[1-8] (SCSI disk 2)

       The  size-in-blocks parameter is the desired size of the file system, in blocks.  It is present only for backwards compatibility.  If omit-
       ted the size will be determined automatically.  Only block counts strictly greater than 10 and strictly less than 65536 are allowed.

OPTIONS

       -c     Check the device for bad blocks before creating the file system.	If any are found, the count is printed.

       -n namelength
	      Specify the maximum length of filenames.	Currently, the only allowable values are 14 and 30.  The default is 30. Note that  kernels
	      older than 0.99p7 only accept namelength 14.

       -i inodecount
	      Specify the number of inodes for the filesystem.

       -l filename
	      Read the bad blocks list from filename.  The file has one bad block number per line.  The count of bad blocks read is printed.

       -v     Make a Minix version 2 filesystem.

EXIT CODES

       The exit code returned by mkfs.minix is one of the following:

       0      No errors

       8      Operational error

       16     Usage or syntax error

SEE ALSO

       mkfs(8), fsck(8), reboot(8)

AVAILABILITY

       The mkfs.minix command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.

Util-linux 2.6							    2 July 1996 						     MKFS.MINIX(8)
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