scotch_gscat: 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_gscat - from package: scotch

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

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