lsdev: 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/lsdev - from package: procinfo

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