showfigfonts: 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/showfigfonts - from package: figlet

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

On Debian possible default full paths are:

/usr/bin/showfigfonts - from package: figlet

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

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