zbasis: 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/lib64/4ti2/bin/zbasis - from package: 4ti2

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

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