pfsinppm: command not found

Have You tried accessing the binary with the full path?

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/lib/debug/usr/bin/pfsinppm - from package: pfstools-dbg
/usr/bin/pfsinppm - from package: pfstools

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