regcompare.bin: 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/debug/usr/lib/libreoffice/sdk/bin/regcompare.bin - from package: libreoffice-dbg
/usr/lib/libreoffice/sdk/bin/regcompare.bin - from package: libreoffice-dev

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

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