chktest: 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/chktest - from package: libnss3-tools

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

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