trust: 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/trust - from package: p11-kit

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

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