iec16022: 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/iec16022 - from package: iec16022

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

On Debian possible default full paths are:

/usr/bin/iec16022 - from package: iec16022

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

Error in other languages:
iec16022: bevel nie gevind nie
iec16022: comandă negăsită
iec16022: comando não encontrado
iec16022: commande introuvable
iec16022: command not found
iec16022: käsku ei ole
iec16022: không tìm thấy lệnh
iec16022: komanda nerasta
iec16022: Kommando nicht gefunden.
iec16022: kommandot finns inte
iec16022: komut yok
iec16022: nie znaleziono polecenia
iec16022: níor aimsíodh an t-ordú
iec16022: no se encontró la orden
iec16022: no s'ha trobat l'ordre
iec16022: opdracht niet gevonden
iec16022: parancs nem található
iec16022: perintah tidak ditemukan
iec16022: príkaz nenájdený
iec16022: příkaz nenalezen
iec16022: команда не найдена
iec16022: командата не е открита
iec16022: 命令找不到
iec16022: コマンドが見つかりません