qmgr: 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 CentOS possible default full paths are:

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

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