stegsnow: 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/stegsnow - from package: stegsnow

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

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