dbxcompress: 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/dbxcompress - from package: emboss

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

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