Author Archives: bhuvan

Recovering data and fixing the drive from unclean unmount of disk from windows

Here’s the full procedure from start to finish. Replace /dev/sdc with your disk if it shows up under a different name, which can happen after replugging. 1. Identify and check the disk In the attribute table, check that these raw values are 0: Reallocated_Sector_Ct (5), Reported_Uncorrect (187), Current_Pending_Sector (197), Offline_Uncorrectable (198) and UDMA_CRC_Error_Count (199). If… Read More: Recovering data and fixing the drive from unclean unmount of… »

Configuring rclone to access Hetzner Object Stroage

How to Configure Rclone with Hetzner Object Storage for Automated Backups and Restores Object storage is an excellent choice for storing backups because it is inexpensive, scalable, and highly durable. This guide explains how to configure Rclone to connect to Hetzner Object Storage so you can manually upload/download backups or automate the process using scripts… Read More: Configuring rclone to access Hetzner Object Stroage »

How to boot system with grub prompt alone

When you see Grub command prompt at the boot time instead of grub menu I think that is when these commands will come handy to boot into the underlying OS. I tested it with ubuntu and pretty sure it should work with any linux distro. Identify your boot partition: Use the ls command to list… Read More: How to boot system with grub prompt alone »

Run jupyter lab as a server

Run this command and access jupyter lab from ip in the network and if hosted it can be accessed over the internet. jupyter lab –no-browser –ip=0.0.0.0 –port=8888 After starting jupyter check the token that can be used as password or token to enter.

Start pm2 process

Example of how to start pm2 instance for development. pm2 start –name “pari-dev” “yarn run develop”

Delete any configs of nvim or get default nvim

Remove these directories to get the default nvim (neo vim) with out any configurations or caches.

Before chroot mount these

Generate random key

A lot of applications these days need some sort of master key to enhance security. Few simple methods to generate such a key uuidgen method Run this command to generate a random 32 characters long key. Most of the OS’s should have this command if not install it. More options and methods using this command… Read More: Generate random key »

Generate a key for use as salt or any other form

While installing or configuring setups we may need to generate a 32 character long random keys may that be for salt or used for flask sessions or while setting up ELK stack and you need to create this key. These 2 commands will generate the desired key. If needed modify or alter the random function… Read More: Generate a key for use as salt or any other… »

Experiments with AWK

These simple combination of commands are quite powerful. I am listing the commands that I used on some of the projects for later reference.