girishrau

Generate an RSA key pair

$ ssh-keygen -t rsa -b 2048 -C "[email protected]"

$ ssh-keygen -f ~/.ssh/id_rsa.pub -m PEM -e

$ openssl dgst -sha256 -sign ~/.ssh/id_rsa input-file.txt | base64 > signb64.txt

Alternatively

$ openssl dgst -sha256 -sign ~/.ssh/id_rsa -out sign.sha256 input-file.txt
$ openssl base64 -in sign.sha256 -out <signature>

$ dircolors -p > ~/.dircolors

Edit the ~/.dircolors to edit the OTHERS_WRITABLE entry. Switch the foreground and background colors. See colors here http://ascii-table.com/ansi-escape-sequences.php

OTHER_WRITABLE 32;40 # dir that is other-writable (o+w) and not sticky

$ find ./ -maxdepth 1 -type d | xargs du -kh -d 1

docker ps -a -f status=exited

docker rm $(docker ps -a -f status=exited -q)

$ git config --global merge.tool bc3
$ git config --global mergetool.bc3.path /bin/bcompare

	------------------------------------------
	set echo off
	set serveroutput on
	set timing off
	set pages 25

	column VAR_NAME format a50;
	column VAR_TEXT_VALUE format a75;
	column VAR_NUM_VALUE format 9999999999;
	column TIMESTAMP format a33;

	1. Generate the up to date grub configuration

	$ grub2-mkconfig -o /boot/grub2/grub.cfg


	2. Get the boot sequence of the kernels in the grub configuration

	$ grep '^menuentry' /boot/grub2/grub.cfg

	This will show the sequence in which the kernels are displayed