gnomint-upgrade-db: 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/gnomint-upgrade-db - from package: gnomint

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