shed: 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/shed - from package: shed

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

On Debian possible default full paths are:

/usr/bin/shed - from package: shed

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

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