lv2peg: 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/lv2peg - from package: lv2-c++-tools

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

Error in other languages:
lv2peg: bevel nie gevind nie
lv2peg: comandă negăsită
lv2peg: comando não encontrado
lv2peg: commande introuvable
lv2peg: command not found
lv2peg: käsku ei ole
lv2peg: không tìm thấy lệnh
lv2peg: komanda nerasta
lv2peg: Kommando nicht gefunden.
lv2peg: kommandot finns inte
lv2peg: komut yok
lv2peg: nie znaleziono polecenia
lv2peg: níor aimsíodh an t-ordú
lv2peg: no se encontró la orden
lv2peg: no s'ha trobat l'ordre
lv2peg: opdracht niet gevonden
lv2peg: parancs nem található
lv2peg: perintah tidak ditemukan
lv2peg: príkaz nenájdený
lv2peg: příkaz nenalezen
lv2peg: команда не найдена
lv2peg: командата не е открита
lv2peg: 命令找不到
lv2peg: コマンドが見つかりません