gss: 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/lib/debug/usr/bin/gss - from package: libgss-dbg
/usr/bin/gss - from package: libgss-dev

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