ohcount: 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/ohcount - from package: ohcount

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