antiword: 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/antiword - from package: antiword

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

On Debian possible default full paths are:

/usr/bin/antiword - from package: antiword

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

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