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

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

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