gvfs-less: 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/gvfs-less - from package: gvfs

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

On Debian possible default full paths are:

/usr/bin/gvfs-less - from package: gvfs-bin

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

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