ocamldsort: 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/ocamldsort - from package: ocamldsort

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