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

/usr/bin/linc-cleanup-sockets - from package: ORBit2-devel

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

On Debian possible default full paths are:

/usr/bin/linc-cleanup-sockets - from package: orbit2

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

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