openchangepfadmin: 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/openchangepfadmin - from package: openchange-client

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

On Debian possible default full paths are:

/usr/bin/openchangepfadmin - from package: openchangeclient

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

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