almanah: 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/almanah - from package: almanah

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

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