skinedit: 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/skinedit - from package: tiemu-skinedit

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

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