will_abort: 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/will_abort - from package: will-crash

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