loqui: 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/loqui - from package: loqui

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