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

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

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