statist: 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/statist - from package: freeze

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

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