dbus-cleanup-sockets: 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 CentOS possible default full paths are:

/bin/dbus-cleanup-sockets - from package: dbus

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/lib/x86_64-linux-gnu/dbus-1.0/debug-build/bin/dbus-cleanup-sockets - from package: dbus-1-dbg
/usr/bin/dbus-cleanup-sockets - from package: dbus

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