iclingo: command not found

Have You tried accessing the binary with the full path?

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/iclingo - from package: gringo

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