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Top Forums Shell Programming and Scripting [bash] remove some entries from output Post 303027013 by soichiro on Friday 7th of December 2018 03:40:01 AM
Old 12-07-2018
[bash] remove some entries from output

Hello everyone,

I have the following script

Code:
sudo lshw -class disk | egrep -E "product|logical name|size:" | awk ' {print;} NR % 3 == 0 { print ""; }'

This is the current output on my machine

Code:
       product: BUP Slim SL 
       logical name: /dev/sdh
       size: 1863GiB (2TB)

       product: STORAGE DEVICE
       logical name: /dev/sdc
          logical name: /dev/sdc

       product: STORAGE DEVICE
       logical name: /dev/sdd
          logical name: /dev/sdd

       product: STORAGE DEVICE
       logical name: /dev/sde
          logical name: /dev/sde

       product: STORAGE DEVICE
       logical name: /dev/sdf
          logical name: /dev/sdf

       product: STORAGE DEVICE
       logical name: /dev/sdg
          logical name: /dev/sdg

       product: OCZ-VECTOR150
       logical name: /dev/sda
       size: 223GiB (240GB)

       product: Samsung SSD 860
       logical name: /dev/sdb
       size: 465GiB (500GB)

       product: BD-RE  BH12LS35
       logical name: /dev/cdrom
       logical name: /dev/sr0

       product: DRW-24B1ST   a
       logical name: /dev/cdrw
       logical name: /dev/dvd

       logical name: /dev/dvdrw
       logical name: /dev/sr1

But, I would like the following

Code:
       product: OCZ-VECTOR150
       logical name: /dev/sda
       size: 223GiB (240GB)

       product: Samsung SSD 860
       logical name: /dev/sdb
       size: 465GiB (500GB)

So my question is... How do I achieve the the above output and getting rid of everything else?
 

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LIBBASH(7)							  libbash Manual							LIBBASH(7)

NAME
libbash -- A bash shared libraries package. DESCRIPTION
libbash is a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may want to load and use in scripts of your own. It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries. Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1). A bash shared library that can be loaded using ldbash(1) must answer 4 requirments: 1. It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash). 2. It must contain a line that begins with '#EXPORT='. That line will contain (after the '=') a list of functions that the library exports. I.e. all the function that will be usable after loading that library will be listed in that line. 3. It must contain a line that begins with '#REQUIRE='. That line will contain (after the '=') a list of bash libraries that are required for our library. I.e. every bash library that is in use in our bash library must be listed there. 4. The library must be listed (For more information, see ldbashconfig(8)). Basic guidelines for writing library of your own: 1. Be aware, that your library will be actually sourced. So, basically, it should contain (i.e define) only functions. 2. Try to declare all variables intended for internal use as local. 3. Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with: __<library_name>_ For example, internal function myfoosort of hashstash library should be named as __hashstash_myfoosort This helps to avoid conflicts in global name space when using libraries that come from different vendors. 4. See html manual for full version of this guide. AUTHORS
Hai Zaar <haizaar@haizaar.com> Gil Ran <ril@ran4.net> SEE ALSO
ldbash(1), ldbashconfig(8), getopts(1), hashstash(1) colors(1) messages(1) urlcoding(1) locks(1) Linux Epoch Linux
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