lat1: 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/lib/picolisp/bin/lat1 - from package: picolisp

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

Error in other languages:
lat1: bevel nie gevind nie
lat1: comandă negăsită
lat1: comando não encontrado
lat1: commande introuvable
lat1: command not found
lat1: käsku ei ole
lat1: không tìm thấy lệnh
lat1: komanda nerasta
lat1: Kommando nicht gefunden.
lat1: kommandot finns inte
lat1: komut yok
lat1: nie znaleziono polecenia
lat1: níor aimsíodh an t-ordú
lat1: no se encontró la orden
lat1: no s'ha trobat l'ordre
lat1: opdracht niet gevonden
lat1: parancs nem található
lat1: perintah tidak ditemukan
lat1: príkaz nenájdený
lat1: příkaz nenalezen
lat1: команда не найдена
lat1: командата не е открита
lat1: 命令找不到
lat1: コマンドが見つかりません