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@fntlnz
fntlnz / self-signed-certificate-with-custom-ca.md
Last active December 10, 2025 16:14
Self Signed Certificate with Custom Root CA

Create Root CA (Done once)

Last update: Nov 2025.

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl ecparam -genkey -name secp384r1 | openssl ec -aes256 -out rootCA.key
@mariokonschake
mariokonschake / shell-histogram
Created January 28, 2013 13:56
A quick histogram in the shell. (Keep forgetting it.)
zcat file | sort | uniq -c | sort -nr
@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active December 14, 2025 12:59
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@andreyvit
andreyvit / tmux.md
Created June 13, 2012 03:41
tmux cheatsheet

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a