Oneliners
Misc Oneliners
Tar Folder and copy to remote Machine
tar cf - /etc/ |ssh ${remote-host} "cd /tmp/ && cat > $(hostname)-etc.tar"
Tar & GZIP Folder and copy to remote Machine
tar czf - /etc/ |ssh ${remote-host} "cd /tmp/ && cat > $(hostname)-etc.tar.gz"
Dump Certs Chain
s="google.com"; timeout 2 openssl s_client -servername ${s} -connect ${s}:443 -showcerts > /tmp/${s}.chain
selfsigned certificate for 1 year
cd /etc/ssl; openssl req -nodes -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem -days 356
set default branch to main
git config --global init.defaultBranch main
bash - check multiple files
[ -f /etc/resolv.conf -a -f /etc/hosts ] && echo "Both files exist" || echo "One or Both Files are missing"
remove word ’nosuid’ on the line /var in /etc/fstab
sed -E -i.bak 's/(.*\/var.*)(,nosuid)(.*)/\1\3/' /etc/fstab
macos show hidden files
defaults write com.apple.finder AppleShowAllFiles -boolean true; killall Finder
or