sg_safte: 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/sg_safte - from package: sg3_utils

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

On Debian possible default full paths are:

/usr/bin/sg_safte - from package: sg3-utils

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

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