pwdhash: 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 CentOS possible default full paths are:

/usr/bin/pwdhash - from package: 389-ds-base

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/pwdhash - from package: 389-ds-base

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

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