crxgram: 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 CentOS possible default full paths are:

/usr/bin/crxgram - from package: Canna

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/crxgram - from package: Canna

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

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