I had recently encountered delayed push notifications on my Android phone whenever the phone was logged onto my home WiFi network. There were no delays observed when the phone is logged onto the 3G or LTE mobile network or other WiFi networks. I decided to investigate.
To delete files that are older than x days, we first find them using the find command. Next, to delete the files, we use the execute action of the find command and pass down the list of files to be deleted to the rm command.
The Business Times of Singapore is a leading English language business and financial newspaper. With a valid subscription, you will get full access to their print edition of their newspaper in PDF format on both Android and IOS devices.
To distinguish between normal output messages and error messages, sometimes there is a need to write messages to the stderr stream from a shell script. By default, output messages are written to stdout stream only.
Session hijacking or cookie hijacking is a way to exploit a valid computer session and gain unauthorised access to information or services in a computer system. It mostly refers to the theft of HTTP cookies that are used to authenticate a user on a web server. In this article, I am going to show you how to perform session hijacking on a website running on WordPress.
One of the most common questions asked by a new sysadmin or UNIX user is: How to debug a shell script?
Let’s say you have a socket that is listening on a particular port. How do you find the process that is listening on a port just by using the Linux Proc FS or /proc filesystem?
The netstat command prints information about the UNIX and Linux networking subsystem such as the network connections, routing tables, masquerade connections, multicast memberships plus many more.
In this article, let’s review some of the netstat tips and tricks.
UNIX is case-sensitive. So, if you are searching for a file, but not sure of it’s case – whether it’s uppercase, lowercase or a mix of both, fret not, it’s not that difficult.
SS7 (Signalling System No. 7) point codes in the telecom world are similar to IP addresses in the internet world. In MTP layer 3, the OPC (Originating point code) and DPC (destination point codes) are used for message routing. This is similar to the source and destination IP addresses used for routing in TCP/IP networks.
