smaclient: 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/smaclient - from package: smaclient

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

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