tegaki-stats: 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/tegaki-stats - from package: python-tegakitools

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