scotch_gpart: 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/scotch_gpart - from package: scotch

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

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