pj_validate: 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/pj_validate - from package: pajeng

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

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