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Linux Tips

SSH Config

To allow/block password auth

vi /etc/ssh/sshd_config
...
PasswordAuthentication no

File Renaming

Replace all spaces with underscore

find . -depth -exec rename 'y/ /_/' ./* {} +

Replace all uppercase with lowercase

find . -depth -exec rename 'y/A-Z/a-z/' ./* {} +

Recursively find and replace in files

find -name '*.md' -exec sed -i 's/foo/bar/g' {} +

Ansible

SSHpass install on mac

brew install hudochenkov/sshpass/sshpass