uno: 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 CentOS possible default full paths are:

/usr/lib64/libreoffice/ure/bin/uno - from package: libreoffice-ure

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/lib/ure/bin/uno - from package: ure

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

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