debtags-submit-patch: 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

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/debtags-submit-patch - from package: debtags

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