Notices by Command Line Magic (climagic@mastodon.social)

echo ${PIPESTATUS[@]} # Show the return values of each command in a pipeline as one string. Or use an index number for the Nth command.

printf "%3d %3d %3d %3d %3d %3d %3d %3d %3d %3d\n" $( echo {1..10}*{1..10}\; | bc ) # Print a multiplication table. Great for those 3rd grader CLI users but also a great demo. :)

man bash | sed 's/./&\n/g' | awk -v mx=$COLUMNS -v my=$LINES 'BEGIN{x=y=e=f=1}{if(x==mx||!x){e*=-1};if(y==my||!y){f*=-1};x+=e;y+=f;printf "\033[%s;%sH%s",y,x,$1;for (a=0;a<400000;a++){}}' # Print the bash man page in diagonal lines across the screen.

telnet http://mapscii.me # For maps in your terminal from OpenStreetMap. Use arrow keys to move around and a/z to zoom in/out. Or use your mouse if your terminal supports that.

Happy 30th Birthday /bin/bash! Thanks to its developers Brian Fox and Chet Ramey and all those who have contributed to it.

Happy 60th Birthday to Mark Adler (@madler), who co-wrote gzip, zip and the zlib library, contributed to PNG development and has had significant roles in pla netary exploration missions while at JPL and has an extremely out of date website. ;)

history -c # clear your active shell's history in case you do something stupid like paste a password+newline into your terminal.

Seen in Cincinnati, Ohio.

Beyond SATA 3 and SAS is
SATA, AF

date -d @1539217802 # Using GNU date you can convert a Unix epoch time back into a human readable date by prefixing it with @

TIL: The bash help command's argument is a regex, not an exact command. Thus you can give it partial matches and patterns.
So 'help co' shows the help for any bash internal command starting with 'co' and 'help "*t"' shows the help for internal commands ending with a 't'.

One plus for Mastodon so far is that I feel the participation a lot more acutely. Comparing numbers, I may be only getting 4-6 likes on a post here, but comparatively that is about 10 times higher per follower count than on the birdsite. This somewhat confirms something I've suspected for a while, that the general over-subscription to feeds on the birdsite leads to most people not even seeing my content or just not watching their feeds at all. Thanks for following.