squeue: 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/squeue - from package: slurm-client

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

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