mohamed-elsayed

security and hardening options for systemd service units

A common and reliable pattern in service unit files is thus:

NoNewPrivileges=yes
PrivateTmp=yes
PrivateDevices=yes
DevicePolicy=closed
ProtectSystem=strict

mohamed-elsayed

Setting up a FlexLM service for SystemD

Create directory structure

1. Create the directory for the flexlm user to use, e.g., /opt/flexlm
2. Place all the binaries for the licence manager and the licence in a vendor specific subdirectory

At this point you should have something similar to following directory structure:

/opt/flexlm/
└── VENDOR

mohamed-elsayed

#!/bin/bash
#
#	/etc/rc.d/init.d/flexlm
#
#	Manage the Intel license server
#
# chkconfig: 2345 90 10
# description: Start or stop the Intel flex license manager
#              There are two daemons: the master and the vendor.

mohamed-elsayed

#!/bin/bash
#####################################################
# Name: Bash CheatSheet for Mac OSX
# 
# A little overlook of the Bash basics
#
# Usage:
#
# Author: J. Le Coupanec
# Date: 2014/11/04

mohamed-elsayed

// Stack - Array based implementation. 
// Creating a stack of integers. 
#include<stdio.h>

#define MAX_SIZE 101

int A[MAX_SIZE]; // integer array to store the stack 
int top = -1;  // variable to mark top of stack in array

// Push operation to insert an element on top of stack. 

mohamed-elsayed

// Stack - Object oriented implementation using arrays
#include <iostream>
using namespace std;
#define MAX_SIZE 101 

class Stack
{
private:
  int A[MAX_SIZE];  // array to store the stack
	int top;   // variable to mark the top index of stack.