ontocount: 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/ontocount - from package: emboss

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

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