pw.pl: 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/share/ledgersmb/bin/pw.pl - from package: ledgersmb
/usr/share/sql-ledger/bin/lynx/pw.pl - from package: sql-ledger
/usr/share/sql-ledger/bin/mozilla/pw.pl - from package: sql-ledger

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

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