tla-gpg-check: command not found

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/tla-gpg-check - from package: tla

You may install the required package with command apt-get install {package}

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