gpglist: 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/gpglist - from package: signing-party

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