lsh-make-seed: 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/lsh-make-seed - from package: lsh-utils

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

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