latop: command not found

Have You tried accessing the binary with the full path?

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/latop - from package: ocaml-melt

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