latex2man: 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/latex2man - from package: texlive-extra-utils

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

Error in other languages:
latex2man: bevel nie gevind nie
latex2man: comandă negăsită
latex2man: comando não encontrado
latex2man: commande introuvable
latex2man: command not found
latex2man: käsku ei ole
latex2man: không tìm thấy lệnh
latex2man: komanda nerasta
latex2man: Kommando nicht gefunden.
latex2man: kommandot finns inte
latex2man: komut yok
latex2man: nie znaleziono polecenia
latex2man: níor aimsíodh an t-ordú
latex2man: no se encontró la orden
latex2man: no s'ha trobat l'ordre
latex2man: opdracht niet gevonden
latex2man: parancs nem található
latex2man: perintah tidak ditemukan
latex2man: príkaz nenájdený
latex2man: příkaz nenalezen
latex2man: команда не найдена
latex2man: командата не е открита
latex2man: 命令找不到
latex2man: コマンドが見つかりません