abrt-cli-root: 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/abrt-cli-root - from package: abrt-tui

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

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