gcin-message: command not found

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-message - from package: gcin

You may install the required package with command apt-get install {package}

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