qalter-torque: 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 CentOS possible default full paths are:

/usr/bin/qalter-torque - from package: torque-client

You may install the required package with command yum install {package}

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