Shell Script: Check Leap Year
Objective: Use a shell script to read a year and check whether it is a leap year or not.
Find Whois Server for Domain
Objective: Find the whois server for a particular domain or TLD (top-level domain).
IP Address to AS Number Lookup
Objective: Perform BGP AS (Autonomous System) number lookup based on IP address using traceroute or whois.
Unix / Linux: Change File Owner from One User to Another
Objective: Change ownership of all files belonging to a given user, within a targeted directory, to another specified user on Unix / Linux.
Linux: Assign Process to CPU Core
Objective: On SMP (Symmetric Multiprocessing) systems, override the Linux kernel’s process scheduling and bind a certain process to a specific CPU or core.
Unix / Linux: Run Command with Timeout
Objective: Execute / Run a command and kill it if it’s still running after a specified duration on Unix / Linux.
Linux: Disable Ping / ICMP Replies
Objective: Disable ping replies or drop ICMP packets of type 0 (echo reply) on Linux.
Linux: Create /dev/tcp Device
Objective: On Linux, create /dev/tcp character device if it’s missing or if it’s not enabled by default.
Unix / Linux: Rename Multiple Files
Objective: Rename multiple files in a directory on Unix or Linux.
Android: Sniff HTTP / HTTPS Traffic Without Root
Objective: Sniff and intercept HTTP/HTTPS traffic sent from an Android device (phone or tablet) that does not have root access.
