scotch_gotst: 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_gotst - from package: scotch

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

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