psfgettable: 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/psfgettable - from package: kbd

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

On Debian possible default full paths are:

/usr/bin/psfgettable - from package: kbd

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

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