word-list-compress: 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/bin/word-list-compress - from package: aspell

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

On Debian possible default full paths are:

/usr/bin/word-list-compress - from package: aspell

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

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