secret-tool: 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/secret-tool - from package: libsecret-tools

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

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