svalidate: 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

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/svalidate - from package: xmlbeans

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