gcin-exit: 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/gcin-exit - from package: gcin

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