chkmpqcval: 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/chkmpqcval - from package: mpqc-support

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

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