e2mtiff: 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/e2mtiff - from package: exactimage

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

Error in other languages:
e2mtiff: bevel nie gevind nie
e2mtiff: comandă negăsită
e2mtiff: comando não encontrado
e2mtiff: commande introuvable
e2mtiff: command not found
e2mtiff: käsku ei ole
e2mtiff: không tìm thấy lệnh
e2mtiff: komanda nerasta
e2mtiff: Kommando nicht gefunden.
e2mtiff: kommandot finns inte
e2mtiff: komut yok
e2mtiff: nie znaleziono polecenia
e2mtiff: níor aimsíodh an t-ordú
e2mtiff: no se encontró la orden
e2mtiff: no s'ha trobat l'ordre
e2mtiff: opdracht niet gevonden
e2mtiff: parancs nem található
e2mtiff: perintah tidak ditemukan
e2mtiff: príkaz nenájdený
e2mtiff: příkaz nenalezen
e2mtiff: команда не найдена
e2mtiff: командата не е открита
e2mtiff: 命令找不到
e2mtiff: コマンドが見つかりません