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Sun Jul 09 14:08:47 GMT 2023
From /weblog/science
What is asexual reproduction: nature’s virgin birth - https://www.zmescience.com[..]exual-reproduction-natures-virgin-birth/ Biology-mysteries - http://list25.com[..]manity-has-not-figured-out-yet/?view=all Over 50 years ago, researchers circumnavigated the Americas sampling ocean life along the way at regular intervals. In the process, they discovered a striking relationship: the abundance of a certain marine species is linked to its body size such that its collective mass is basically the same. Krill are a billion times smaller than tuna, but their numbers are a billion times more abundant. If you were to weigh all the krill in the ocean, the mass should be close to all the tuna — but not anymore. - https://www.zmescience.com[..]umans-broke-a-natural-law-of-ocean-life/ Scientists are stunned by the discovery of the world’s largest bacterium. It’s the size of a fly - https://www.zmescience.com/science/largest-giant-bacteria-3432/ The good touch: researchers uncover the biological pathways that transmit pleasant touch - https://www.zmescience.com[..]ogical-pathway-pleasant-touch-426247234/ Clitorises - https://www.economist.com[..]torises-suggests-snakes-are-highly-sexed https://www.webmd.com[..]the-spotlight-major-scientific-discovery This bacterium can eat and digest plastic thrown into the ocean - https://www.zmescience.com[..]nd-digest-plastic-thrown-into-the-ocean/ Why do we stretch when we yawn? - https://www.zmescience.com/science/why-we-stretch-2853496/ What are biofilms and how do they form? - https://www.zmescience.com/science/what-are-biofilms/ What is osmosis: a critical principle in biology - https://www.zmescience.com/science/what-is-osmosis-0634/ Scientists are stunned by the discovery of the world’s largest bacterium. It’s the size of a fly - https://www.zmescience.com/science/largest-giant-bacteria-3432 What is Taxonomy in biology? A beginner’s guide - https://www.zmescience.com[..]rence/ecology-articles/what-is-taxonomy/ Directed evolution: Tailoring proteins, enzymes, and life - https://www.zmescience.com[..]ion-tailoring-proteins-enzymes-and-life/
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Fri May 19 13:22:08 GMT 2023
From /weblog/unix
Sum time in script - http://www.markhneedham.com[..]-summing-the-total-time-from-a-log-file/ Special bash parameters - http://javarevisited.blogspot.com[..]ial-bash-parameters-in-script-linux.html ls sort by file size - http://www.unix.com[..]ns-answers/6518-sorting-ls-filesize.html How to use "~" - http://www.thegeekstuff.com/2010/06/bash-tilde-expansion use rlwrap to enable BASH like editing in SQLplus, and use screen to presist terminal sessions - http://binkley.blogspot.com[..]miracle-utilities-rlwrap-and-screen.html Ctrl+r searches through history Use the history command plus !# to run old commands Shell expansion using {} , e.g. cp foo.sh{,.old} == cp foo.sh foo.sh.old zsh have good auto complete http://www.pgrs.net/2007/9/6/useful-unix-tricks mkdir -p creates nested directories Use less instead of tail lsof shows open files ps will show process trees with the f flag http://www.pgrs.net/2007/10/8/useful-unix-tricks-part-2 !! is the previous command in the shell history Use vim -b to show nonprintable characters ** is a recursive wildcard in zsh cd – will return to the previous folder Use ctrl+z and kill %1 to kill a process that will not die pwdx shows the working directory of a process Use sh -x to debug shell scripts sysctl replaces /proc on macs http://pgrs.net/2009/2/20/useful-unix-tricks-part-3 ps -eo pcpu,pid,args | sort -n => check CPU% grep -sq "" /etc/lsb-release && lsb_release -rd => run command if file exist More about ps and free - http://www.thegeekstuff.com/2010/07/3-shell-scripts/ HTML tools for commandline - http://www.macdevcenter.com/lpt/a/6343 Bash history - http://www.talug.org/events/20030709/cmdline_history.html Tips of using shell, like saving all history - http://blog.andrewhays.net/love-your-terminal Standard Shell completion: Variablename completion Username completion Executable completion Filename and directory completion Hostname completion http://www.thegeekstuff.com/2013/11/bash-standard-completion/ replace cp long_and_complex_file_name long_and_complex_file_name.backup with this: cp long_and_complex_file_name{,.backup} http://www.jacopretorius.net[..]/2013/12/unix-trick-brace-expansion.html Use the history - http://www.jacopretorius.net/2013/12/my-favorite-unix-trick.html How to use xargs - http://www.thegeekstuff.com/2013/12/xargs-examples/ Nice presentation of man page - http://explainshell.com/explain?cmd=+ls+-ltr Parallel shell - http://www.ubuntugeek.com/pssh-parallel-ssh-tools.html A Beginner’s Guide to tmux - https://medium.com[..]s/a-beginners-guide-to-tmux-7e6daa5c0154
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Fri May 19 00:52:20 GMT 2023
From /weblog/history
The ancient origins of glass - https://knowablemagazine.org[..]ticle/society/2021/ancient-origins-glass The true location of the Hanging Gardens of Babylon remains an unsolved mystery, but the latest research suggests looking in a different place. - https://www.nationalgeographic.co.uk[..]-of-the-ancient-world-are-except-for-one They were scouting for oil in Iran. They found an ancient temple instead - https://www.nationalgeographic.com[..]ine/article/the-ziggurat-of-elam-in-iran What were hieroglyphs, the Egyptian words of the gods, and what did they mean? - https://www.zmescience.com/science/egyptian-hieroglyphs-feature/ Only one ancient account mentions the existence of Xerxes Canal, long thought to be a tall tale. But archaeology is confirming that Persia's engineering triumph was real. - https://www.nationalgeographic.com[..]al-xerxes-existence-darius-persia-greece
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