erlang-depends: 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/erlang-depends - from package: erlang-dev

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

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