strfile: 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/sbin/strfile - from package: fortune-mod

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

On Debian possible default full paths are:

/usr/bin/strfile - from package: fortune-mod

You may install the required package with command apt-get install {package}

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