update-libfile-scan-perl: 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/sbin/update-libfile-scan-perl - from package: libfile-scan-perl

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

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