scotch_gcv: 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_gcv - from package: scotch

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

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