https://blog.garhve.com/posts/ Recent content in Posts on blog | garhve's hub Hugo -- gohugo.io en-us Wed, 14 Dec 2022 00:00:00 +0000 https://blog.garhve.com/posts/no-problemo/ Wed, 14 Dec 2022 00:00:00 +0000 https://blog.garhve.com/posts/no-problemo/ My feeling to express are fading… Not sure how I know it, just got this sense. Recently, I picked up an anime named “The Simpsons” which I watched first episode back in highschool. This first time was not gave me too much impression. but I fell in love with it right after re-watched first episode! So I downloaded the half of the whole series. The anime is just about https://blog.garhve.com/posts/past-is-great/ Mon, 07 Nov 2022 09:16:15 +0800 https://blog.garhve.com/posts/past-is-great/ Lately, there’s a sign has been keeping jumping out in front of my eyes. That the past is great! First is in the movie Midnight in Paris, directed by Woody Allen, which I just finished a week ago. It tells a story of how a screen writer loves 20th century because his loving artists all living in it. Though he finally realized that he loves past because the present is imperfect. https://blog.garhve.com/posts/mess-with-bash2/ Thu, 29 Sep 2022 09:43:02 +0800 https://blog.garhve.com/posts/mess-with-bash2/ More info is in this tutorial Bash scripting cheatsheet all value expansions (ie. all syntax with a $ prefix) can only expand inside quoted arguments if the argument was double-quoted . Single quotes will turn the dollar-syntax into literal characters, causing bash to output the dollar rather than expand its value in-place! “Value expansions ($...) must always be double-quoted.” Never leave a value expansion unquoted. Redirection File Redirection 0 is standard input, 1 is standard output, 2 is standard error https://blog.garhve.com/posts/escape-sequence/ Mon, 12 Sep 2022 09:02:06 +0800 https://blog.garhve.com/posts/escape-sequence/ copied from github in case one day it disappears more information could visit vt100 User Guide ANSI Escape Sequences Standard escape codes are prefixed with Escape: Ctrl-Key: ^[ Octal: \033 Unicode: \u001b Hexadecimal: \x1B Decimal: 27 Followed by the command, somtimes delimited by opening square bracket ([), known as a Control Sequence Introducer (CSI), optionally followed by arguments and the command itself. Arguments are delimeted by semi colon (;). https://blog.garhve.com/posts/architecture-of-linux-kernel/ Sat, 03 Sep 2022 14:33:37 +0800 https://blog.garhve.com/posts/architecture-of-linux-kernel/ Description Modern microcontrollers nowadays support at least two privilege levels. Intel/AMD x86-64 family supports 4 levels, whilst ARM (32bit) microcontrollers support up to 7 levels (6 privileged, 1 non-privileged). Modern operating systems support at least 2 levels: User space: For applications to run in unprivileged user mode Kernel space: For the kernel (and all its components) to run in privileged mode – kernel mode Address of these 2 spaces are separate. https://blog.garhve.com/posts/mess-with-bash1/ Thu, 25 Aug 2022 13:40:56 +0800 https://blog.garhve.com/posts/mess-with-bash1/ Crontab crontab is a useful tool, I really regret that I don’t familar it earlier. It’s usage really simple, and these two are my frequent using: crontab -e #edit crontab file that reside in /var/spool/cron crontab -l #list current crontab job It basic syntax as follow, also really simple example of usage: delete file foo every minute * * * * * rm foo delete file foo every 15 minutes 15 * * * * rm foo delete file foo every beginning of hour 0 * * * * rm foo delete file foo every minute after 3 hours * 3 * * * rm foo delete file foo every day at 18:30 30 18 * * * rm foo delete file foo every beginning of month 0 0 0 * * rm foo delete file foo on beginning of 1st,10th of month 0 0 1,10 * * rm foo The usage really simple, I now use it to renew my SSL certification and daily update bt-tracker. https://blog.garhve.com/posts/install-archlinux-on-tencent-server/ Wed, 10 Aug 2022 19:24:59 +0800 https://blog.garhve.com/posts/install-archlinux-on-tencent-server/ In order to build a website for myself, I rent a server from Tencent. This is my final decision, the process is turtuous… My requirement as below: abroad provider because they don’t have to register.. the the budget’s not relax, all I can choosing was in range of $0 - $10. It can runs Arch linux seamlessly I already eye on one: Linode. But they don’t see me… and banned all my gmail account from their service… https://blog.garhve.com/posts/first-website/ Wed, 10 Aug 2022 17:21:02 +0800 https://blog.garhve.com/posts/first-website/ So now I can say my website is on.. even though it just literally has nothing but a printing hello I got this garhve.com domain on namesilo for $9.95 per year, it’s really cheap! I always want a domain that is .com suffix. Now, the web is https, this is a bit difficult for me. Due to personal interest, I didn’t choose frame to base my website. I use Nginx but I don’t familiar with it.