dsyslog: 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/lib/debug/usr/sbin/dsyslog - from package: dsyslog-dbg
/usr/sbin/dsyslog - from package: dsyslog

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

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