klog.krb5: 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/klog.krb5 - from package: openafs-krb5

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

Error in other languages:
klog.krb5: bevel nie gevind nie
klog.krb5: comandă negăsită
klog.krb5: comando não encontrado
klog.krb5: commande introuvable
klog.krb5: command not found
klog.krb5: käsku ei ole
klog.krb5: không tìm thấy lệnh
klog.krb5: komanda nerasta
klog.krb5: Kommando nicht gefunden.
klog.krb5: kommandot finns inte
klog.krb5: komut yok
klog.krb5: nie znaleziono polecenia
klog.krb5: níor aimsíodh an t-ordú
klog.krb5: no se encontró la orden
klog.krb5: no s'ha trobat l'ordre
klog.krb5: opdracht niet gevonden
klog.krb5: parancs nem található
klog.krb5: perintah tidak ditemukan
klog.krb5: príkaz nenájdený
klog.krb5: příkaz nenalezen
klog.krb5: команда не найдена
klog.krb5: командата не е открита
klog.krb5: 命令找不到
klog.krb5: コマンドが見つかりません