pt-archiver: 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/pt-archiver - from package: percona-toolkit

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

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