ini2spectacle: 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/bin/ini2spectacle - from package: spectacle

You may install the required package with command apt-get install {package}
Error in other languages:
ini2spectacle: bevel nie gevind nie
ini2spectacle: comandă negăsită
ini2spectacle: comando não encontrado
ini2spectacle: commande introuvable
ini2spectacle: command not found
ini2spectacle: käsku ei ole
ini2spectacle: không tìm thấy lệnh
ini2spectacle: komanda nerasta
ini2spectacle: Kommando nicht gefunden.
ini2spectacle: kommandot finns inte
ini2spectacle: komut yok
ini2spectacle: nie znaleziono polecenia
ini2spectacle: níor aimsíodh an t-ordú
ini2spectacle: no se encontró la orden
ini2spectacle: no s'ha trobat l'ordre
ini2spectacle: opdracht niet gevonden
ini2spectacle: parancs nem található
ini2spectacle: perintah tidak ditemukan
ini2spectacle: príkaz nenájdený
ini2spectacle: příkaz nenalezen
ini2spectacle: команда не найдена
ini2spectacle: командата не е открита
ini2spectacle: 命令找不到
ini2spectacle: コマンドが見つかりません