img2cif: 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 CentOS possible default full paths are:

/usr/bin/img2cif - from package: CBFlib

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/img2cif - from package: cbflib-bin

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

Error in other languages:
img2cif: bevel nie gevind nie
img2cif: comandă negăsită
img2cif: comando não encontrado
img2cif: commande introuvable
img2cif: command not found
img2cif: käsku ei ole
img2cif: không tìm thấy lệnh
img2cif: komanda nerasta
img2cif: Kommando nicht gefunden.
img2cif: kommandot finns inte
img2cif: komut yok
img2cif: nie znaleziono polecenia
img2cif: níor aimsíodh an t-ordú
img2cif: no se encontró la orden
img2cif: no s'ha trobat l'ordre
img2cif: opdracht niet gevonden
img2cif: parancs nem található
img2cif: perintah tidak ditemukan
img2cif: príkaz nenájdený
img2cif: příkaz nenalezen
img2cif: команда не найдена
img2cif: командата не е открита
img2cif: 命令找不到
img2cif: コマンドが見つかりません