loimpress: 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/loimpress - from package: libreoffice-impress

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

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