getclose: 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/getclose - from package: gnats-user

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