ytobin: 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 CentOS possible default full paths are:

/usr/bin/ytobin - from package: patchy

You may install the required package with command yum install {package}

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