peel: 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/peel - from package: ears

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

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