Perl: slurp STDIN

Source: How can I slurp STDIN in Perl?

my $str = do { local $/;  };

macOS: get actual printer IP address

Source: How do I get the actual ip address of a printer in OSX Yosemite

http://localhost:631/printers/

git: rename a branch

Source: Rename a local and remote branch in git

Rename local branch.

git branch -m new-name

Delete the old-name remote branch and push the new-name local branch.

git push origin :old-name new-name

Reset the upstream branch for the new-name local branch.

git push origin -u new-name