tin: 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/tin - from package: tin

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