emi-canl-server: 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/emi-canl-server - from package: canl-c-examples

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

On Debian possible default full paths are:

/usr/bin/emi-canl-server - from package: libcanl-c-examples

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

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