perlindex: command not found

Have You tried accessing the binary with the full path?

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/perlindex - from package: perlindex

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