live-swapfile: 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:

/bin/live-swapfile - from package: live-boot

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

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