ltxfileinfo: 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

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/ltxfileinfo - from package: texlive-extra-utils

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