florence: 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/florence - from package: florence

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

On Debian possible default full paths are:

/usr/bin/florence - from package: florence

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

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