ecaccess-file-chmod: 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/ecaccess-file-chmod - from package: ecaccess

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