❑ Systemd is the new system/service manager replacing init process.
❑ Many Linux distros have adopted systemd.
| Linux | First adopted version |
| Debian | v8(April 2015) |
| Ubuntu | v15.04(April 2015) |
| SUSE Linux Enterprise Server | v12(October 2014) |
| Red Hat Enterprise Linux | v7.0(June 2014) |
| CentOS | v7.14.04(April 2014) |
| CoreOS | v94.0.0(October 2013) |
| Arch Linux | v2012.10.06(October 2012) |
| openSUSE | v12.2(September 2012) |
| Mageia | v2.0(May 2012) |
| Fedora | v15(May 2011) |
| Alpine Linux | - |
| Android | - |
| Artix Linux | - |
| Gentoo Linux | - |
| Knoppix | - |
| Mint | - |
| Slackware | - |
| Solus | - |
| Void Linux | - |
| Devuan | - |
* This is based on the time I wrote.