tiffcp: 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/tiffcp - from package: libtiff

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

On Debian possible default full paths are:

/usr/bin/tiffcp - from package: libtiff-tools

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

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