socklist: 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/socklist - from package: procinfo

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