iconc: 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/iconc - from package: iconc

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

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