systemd VS fish-shell

Retrieve the archive containing the JBoss Web Server from the Red Hat Customer Portal and install the files on the system. Configure the Red Hat Enterprise Linux (RHEL) operating system including the users, groups, and the required setup files to enable JBoss Web Server as a systemd service. Ensure the required Java Virtual Machine is installed Fine-tune the configuration of the JBoss Web Server server, such as binding it to the appropriate interface and port. Deploy web applications along with enabling and starting the JBoss Web Server as a [systemd](https://www.freedesktop.org/wiki/Software/systemd/) service. Perform a health check to ensure that the deployed application is accessible.

A systemd-free fork from Debian Linux+GNU

Devuan is a fork of Debian GNU+Linux without systemd.

This post shows how to install and run Docker on Devuan, a systemd-free fork of Debian.

I built the dev env on Devuan GNU+Linux, a fork of Debian without systemd. It resembles my past trial on Artix Linux.

Devuan GNU+Linux is a fork of Debian without systemd and hence Snaps (Snapd). Even on it, it's easy to install Android Studio and start to develop Android mobile apps.

[root@rocky-8-lxc ~]# rpm -qf /etc/rc.d/rc.local systemd-239-68.el8_7.4.x86_64 [root@rocky-8-lxc ~]# rpm -qi systemd Name : systemd Version : 239 Release : 68.el8_7.4 Architecture: x86_64 Install Date: Fri 07 Apr 2023 02:11:42 AM UTC Group : Unspecified Size : 11306123 License : LGPLv2+ and MIT and GPLv2+ Signature : RSA/SHA256, Tue 21 Feb 2023 05:04:34 PM UTC, Key ID 15af5dac6d745a60 Source RPM : systemd-239-68.el8_7.4.src.rpm Build Date : Tue 21 Feb 2023 04:52:49 PM UTC Build Host : ord1-prod-x86build004.svc.aws.rockylinux.org Relocations : (not relocatable) Packager : [email protected] Vendor : Rocky URL : http://www.freedesktop.org/wiki/Software/systemd Summary : System and Service Manager Description : systemd is a system and service manager that runs as PID 1 and starts the rest of the system. It provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux control groups, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. systemd supports SysV and LSB init scripts and works as a replacement for sysvinit. Other parts of this package are a logging daemon, utilities to control basic system configuration like the hostname, date, locale, maintain a list of logged-in users, system accounts, runtime directories and settings, and daemons to manage simple network configuration, network time synchronization, log forwarding, and name resolution.

Reminds of the note at the bottom of Fish's releases. It's there because the build system cannot determine the current version for some reason. Hopefully that will go away now that they have switched to a different language / build system. The custom tarball is used by Arch Linux at the very least.

https://github.com/fish-shell/fish-shell/releases/tag/3.7.1

https://github.com/fish-shell/fish-shell/issues/7772#issueco...

https://gitlab.archlinux.org/archlinux/packaging/packages/fi...

A recent practical example of the former: the fish shell re-wrote incrementally from C++ to Rust, and is almost finished https://github.com/fish-shell/fish-shell/discussions/10123

An example of the latter: c2rust, which is a work in progress but is very impressive https://github.com/immunant/c2rust

It currently translates into unsafe Rust, but the strategy is to separate the "compile C to unsafe Rust" steps and the "compile unsafe Rust to safe Rust" steps. As I see it, as it makes the overall task simpler, allows for more user freedom, and makes the latter potentially useful even for non-transpiled code. https://immunant.com/blog/2023/03/lifting/

And this discussion from November has an update on the progress: https://github.com/fish-shell/fish-shell/discussions/10123

We're using bash as our terminal shell for now (it is standard in many distros) but it is not the only one out there. If you want to test out zsh, fish or oh-my-zsh, you will see that there are a few differences and the features are usually the main differentiator. Try that, poke around.

They have a variety of reasons to move to rust, as outlined in their original rust discussion[1]. Mostly around finding other contributors, and adding an async/parallel mode they're comfortable with.

[1] https://github.com/fish-shell/fish-shell/pull/9512