socklog-check: 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/socklog-check - from package: socklog

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

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