scancel: command not found

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:

/usr/bin/scancel - from package: slurm-client

You may install the required package with command apt-get install {package}

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