A ping command with a graph
Gping - like regular ping, but with a graph! https://t.co/bPKWkEA8Zk #linux #ubuntu
— Colin O'Dell (@colinodell) 30 oktober 2017
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Posts tagged with linux
Linux Server Families
In a new video on his awesome Servers For Hackers site Chris Fidao explains the major differences between some popular Linux flavours.
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The Bash For Loop, The First Step in Automation on Linux
In a post on his site Mattias Geniar shares how to write for loops in Bash.
Let me first start by saying something embarrassing. For the first 4 or 5 years of my Linux career -- which is nearing 10 years of professional experience -- I never used loops in Bash scripts. Or at the command line.The thing is, I was a very fast mouse-clicker. And a very fast copy/paster. And a good search & replacer in vim and other text editors. Quite often, that got me to a working solution faster than working out the quirky syntax, testing, bugfixing, ... of loops in Bash.
And, to be completely honest, if you're managing just a couple of servers, I think you can get away with not using loops in Bash. But, once you master it, you'll wonder why you haven't learned Bash for-loops sooner.
Linux systems performace
Brendan Gregg, a Netflix engineer, gave this talk at this years Percona Data Performance Conference.
https://www.youtube.com/watch?v=CbmEDXq7es0
Linux Performance Analysis in 60,000 Milliseconds
In this post, the Netflix Performance Engineering team will show you the first 60 seconds of an optimized performance investigation at the command line, using standard Linux tools you should have available.http://techblog.netflix.com/2015/11/linux-performance-analysis-in-60s.html
Do not trust cat at the command line
In this excellent post Matthias explains why you can't put all your trust in cat when inspecting a file:
https://ma.ttias.be/terminal-escape-sequences-the-new-xss-for-linux-sysadmins/
Let's all agree to never trust anything that has been posted on the internet without very thorough inspection. And let's especially agree to never run an arbitrary command or script found on the internet, without really close inspection.
