kiconedit: 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/kiconedit - from package: kiconedit

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

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