gl-live-netcfg: 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/share/drbl/setup/files/gparted/usr/sbin/gl-live-netcfg - from package: clonezilla

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