aklog: 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 Debian possible default full paths are:

/usr/bin/aklog - from package: openafs-krb5

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