grcm: 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/grcm - from package: grcm

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

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