colprof: 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/colprof - from package: argyll

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

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