rc-abort: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/lib/rc/sbin/rc-abort - from package: openrc

You may install the required package with command apt-get install {package}
Error in other languages:
rc-abort: bevel nie gevind nie
rc-abort: comandă negăsită
rc-abort: comando não encontrado
rc-abort: commande introuvable
rc-abort: command not found
rc-abort: käsku ei ole
rc-abort: không tìm thấy lệnh
rc-abort: komanda nerasta
rc-abort: Kommando nicht gefunden.
rc-abort: kommandot finns inte
rc-abort: komut yok
rc-abort: nie znaleziono polecenia
rc-abort: níor aimsíodh an t-ordú
rc-abort: no se encontró la orden
rc-abort: no s'ha trobat l'ordre
rc-abort: opdracht niet gevonden
rc-abort: parancs nem található
rc-abort: perintah tidak ditemukan
rc-abort: príkaz nenájdený
rc-abort: příkaz nenalezen
rc-abort: команда не найдена
rc-abort: командата не е открита
rc-abort: 命令找不到
rc-abort: コマンドが見つかりません