pepwheel: 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/pepwheel - from package: emboss

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

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