universalindentgui: 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/universalindentgui - from package: universalindentgui

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