cctiff: 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/cctiff - from package: argyll

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

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