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YA TIL tcpdump can just display incoming or outgoing traffic

Linux
-Q in
-Q out

BSD
-D in
-D out

utcc.utoronto.ca/~cks/space/b...

TIL a handy way to diff two directories

git diff --no-index dirA dirB

dirA and dirB are not git repositories.

TIL that following are UB and why it matters !

memcpy(NULL, NULL, 0);
memcmp(NULL, NULL, 0);
(int *)NULL + 0;
(int *)NULL - 0;
(int *)NULL - (int *)NULL;

from

developers.redhat.com/articles/202...

TIL that you can create brave browser profiles with different configurations for same extensions. Allows one to have different VPNs for different profiles.

Need to remember to use unbuffered output to avoid headscratcher moments.

ag $patter $path | tee results.txt

scratch my head for results not appearing for a long time (buffered)

stdbuf -o0 ag $patter $path | tee results.txt

see the output as ag finds them