linuxinfo: 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/linuxinfo - from package: linuxinfo

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

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