svxedit: 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/svxedit - from package: survex-svxedit

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