swap-offset: 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/sbin/swap-offset - from package: uswsusp

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

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