注意：以下の記事を参考にされ、問題が生じた場合、責任は負えません。
基本的には私の忘備録です。
使用環境は manjaro-linux と時々macです。
windowsでは利用できない設定があります。
本文を英語で記載してますが、中学生レベルですので、容易に理解できると思います。
英語で書くと、わかりにくいと思われる部分は、日本語にしてます。
link先に了解なく引用している部分がありますので、問題があればご連絡ください。

前置き: CLI で使えるRSS Reader

今回は　srss　を紹介。
超軽量ですが、必要最小限の機能は持っています。
性能が低いPCで、利用するのに良いかもしれません。

srss : Tiny application & minimal functions.
cleed : Tiny application & output RSS feeds at once.
newboat : Great application! It has many functions and can be customized as you like. It's a bit heavy, comparing above two apps, but lighter than GUI applications.
Vim Style Newsboat : Good example to customize newsboat.

1. srss

help menu

srss h

NAME:
   srss - A simple command line RSS feed reader

USAGE:
   srss [global options] command [command options] [arguments...]

VERSION:
   0.1.0

COMMANDS:
   add, a     Add url entry
   edit, e    Edit URL entry file
   tui, t     View items in the feed with built-in pager
   open, o    Open feed URL on your browser
   import, i  Import Feed URL from OPML file
   update, u  Fetch the latest feeds and update the cache
   help, h    Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --help, -h     show help (default: false)
   --version, -v  print the version (default: false)

1-1. Install

Can not find package inside manjaro repository & AUR.
Download binary below.

1-2. Set up

Read srss git page carefully.

1-2-A. Add URL.

!! You can add only one URL at a time.!!

### example.
## BBC.com
srss add http://newsrss.bbc.co.uk/rss/newsonline_world_edition/front_page/rss.xml

## NHK
srss add https://www.nhk.or.jp/rss/news/cat0.xml

Import Feed URL from OPML file, if you have.

srss import --path path/to/file.opml

1-2-B. Edit URLs.

srss edit --editor vim

URL-file location & can edit it by your editor. So you might del & add URLs here.

The location of the URL entry file depends on the OS. It is as follows:

Linux	$XDG_CONFIG_HOME/srss/urls.txt or $HOME/.config/srss/urls.txt
macOS	$HOME/Library/Application Support/srss/urls.txt

contents of urls.txt.

vim ~/.config/srss/urls.txt

http://newsrss.bbc.co.uk/rss/newsonline_world_edition/front_page/rss.xml
https://www.nhk.or.jp/rss/news/cat0.xml
https://forum.manjaro.org/c/announcements/stable-updates/12.rss

1-3. Read RSS feed.

Update RSS at first & show RSS.
!! srss does not have autoupdate. You should update manually !!

## update RSS
srss u

## read RSS feed using you pager(less etc)
srss t

Quit srss.

type escape-key

sample script : update every 30 min.

while true ; do
 srss u && srss t ;
 sleep 1800 ;
done

Open feed URL on your browser: start with o.
But I do not know how it work.

Use the open, o command, you can open the link of the selected item in your browser. You can select multiple items with Tab key.

srss o

1-4. How srss display RSS feed.

Reference