shindont: 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/shindont - from package: ruby-shindo

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