Oneliners

s="google.com"; timeout 2 openssl s_client -servername ${s} -connect ${s}:443 -showcerts > /tmp/${s}.chain

cd /etc/ssl; openssl req -nodes -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 356

git config --global init.defaultBranch main

[ -f /etc/resolv.conf -a -f /etc/hosts ] && echo "Both files exist" || echo "One or Both Files are missing"

sed -E -i.bak 's/(.*\/var.*)(,nosuid)(.*)/\1\3/' /etc/fstab

defaults write com.apple.finder AppleShowAllFiles -boolean true; killall Finder

defaults write com.apple.finder AppleShowAllFiles -boolean false; killall Finder

cd /usr; find . -type f |cut -d/ -f2 |sort |uniq -c

fqdn="www.egal.com"; host $fqdn |awk '$0 ~ "has" {print $NF}' |map f 'doas /sbin/pfctl -t t_allow_ssh -T add $f'

fqdn="www.egal.com"; host $fqdn |awk '$0 ~ "has" {print $NF}' |pfctl -t spammers -T add -f-

qrencode -t UTF8 < ~/.ssh/id_ed25519.pub

qrencode -t UTF8 < ~/.ssh/id_ed25519

gpg --export --armor |sed "s/END PGP PUBLIC/END PGP \.\*/" |qrencode -o public.png

gpg --export-secret-keys --armor |sed "s/END PGP PRIVATE/END PGP \.\*/" |qrencode -Sv40 -o private.png

cat LARGEFILE.csv |python3 -c 'import csv, json, sys; print(json.dumps([dict(r) for r in csv.DictReader(sys.stdin)]))' > LARGEFILE.json

python3 -c "import sys; print('\n'.join(sys.path))"