exatools: 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/exatools - from package: texlive-context

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

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