xcfinfo: 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 Debian possible default full paths are:

/usr/bin/xcfinfo - from package: xcftools

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

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