icecc: 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/icecc - from package: icecream

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

On Debian possible default full paths are:

/usr/bin/icecc - from package: icecc

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

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