sc: 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/sc - from package: perl-WWW-Splunk

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

On Debian possible default full paths are:

/usr/bin/sc - from package: sc

You may install the required package with command apt-get install {package}

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