Linux: how to replace text between strings
One of the most common operations i have to do is to replace text between strings with another string or just delete the string, to do this…
cat linux-how-to-replace-text-between-strings.md →$ ls -lh ./posts
// also on this box: ./practice, ./tools and ./games
Linux: Set a users password to “never” expire.
In this article i will show you how to set a users password to never expire, to do this we will use the chage command, this command can be…
cat linux-set-a-users-password-to-never-expire.md →
Awesome awk oneliners
I use awk very often, here are some of the one-liners i use often.
cat awk-useful-one-liners.md →
Linux: stdin, stdout and stderr, how to work with them
bash utilize file descriptors to read and write data, The numerals 0 through 9 are file descriptors .
cat linux-stdin-stdout-and-stderr-how-to-work-with-them.md →
Linux: create your own TCP port scanner!
Imagine the following situation, you have to check TCP services running on remote hosts in a subnet but you don't have any tools like nmap…
cat linux-create-your-own-tcp-port-scanner.md →
Linux: How to real-time plot in a terminal
Often i need a quick visualization of data generated in real time by a command line tool, looking for such tools i found ttyplot which is…
cat linux-how-to-real-time-plot-in-a-terminal.md →
Python: How to create a generator function
As you might already know a function is used to return a result at the end of the execution, its a super handy feature but it has two…
cat python-how-to-create-a-generator-function.md →
Nmap network reconnaissance using TCP Ping
In a previous article we had discussed about Nmap network reconnaissance using various ICMP requests , which can be a powerful tool that…
cat nmap-network-reconnaissance-using-tcp-ping.md →
Nmap network reconnaissance using various ICMP requests
Nmap is the most well known network scanner tool, and is used by System administrators, network engineers and security specialists; it can…
cat nmap-network-reconnaissance-using-various-icmp-requests.md →