Soubhik Sen (icon)

I write sometimes...

I believe writing is a great way to share knowledge, dive deeper into specific topics and get insights.
I write about things that I learn and things that I find interesting. I hope you find them interesting too!

How to send Signal to Processes

Signals allow the operating system to communicate with programs(or processes). There are about 30 standard signals implemented by the...

bash linux signals process shell

Ksplice Install Linux Kernel Updates without Reboot

The Ksplice software allows changes/patches to be made to the running kernel without the need for any reboot. Important patches are...

ksplice linux booting system updates

Get Process ID of Linux Foreground and Background Processes

The PID (process identification number) is a serial number (starting from 1) given by the operating system to uniquely identify the...

shell scripting bash process linux

Shell Scripting – Bash Trap Command

The trap command in Bash executes specific code in response to the signal given to the program. It traps the signal received by the...

linux signals operating system

Shell Script which Works Similar to the Unix Command HEAD TAIL

HEAD and TAIL command print a specified number of lines of a file from the beginning and from the end respectively. If we don’t specify...

linux-unix shell scripting shell function library

Shell Scripting to check System Performance

We will build a bash script to check :memory utilization, CPU utilisation, disk...

linux shell function library memory cpu shell scripting

Shell Script to validate the date, taking into account leap year rules

We will build a bash script to check whether the entered date is valid or not according to the Gregorian Calendar rules. If the date is...

shell scripting calendar maths

Shell Scripting – Shell Signals Values

Signals help the operating system to communicate with processes and vice-versa. Signals are also generated when processes don’t...

process shell function library signals

Shell Scripting – JOB SPEC & Command

Processes started from the terminal (and still not terminated) get a unique serial number or ID that is known as job spec or job ID....

shell function library bash scripting

Time Units in Solidity

Solidity is a programming language to write smart contracts on the Ethereum blockchain. Precise timings have an important role to play...

solidity blockchain