obrms: 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/obrms - from package: openbabel

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

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