fishpoke: 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 CentOS possible default full paths are:

/usr/bin/fishpoke - from package: fishpoke

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

On Debian possible default full paths are:

/usr/bin/fishpoke - from package: fishpoke

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