mlprof: 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/mlprof - from package: mlton-tools

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

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