textools: command not found

Have You tried accessing the binary with the full path?

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/textools - from package: texlive-context

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