svinfo: command not found

Have You tried accessing the binary with the full path?

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 Debian possible default full paths are:

/usr/bin/svinfo - from package: svtools

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