How to change last commit message if pushed by mistake

git reset --soft HEAD^ or git commit --amend git commit -m "New message" git push -f

Remove last commit from repository

git reset --hard HEAD~1 git push -f

Remove bad tag from repository

git tag -d bad-tag git push origin :bad-tag git tag -a good-tag -m "Add good-tag" git push --tags

Bold and Italic in HTML5

Use <b> when you want the text to have a different style without contextual importance, but use <strong> when you want the text to have extra importance from a content or SEO perspective. Use <i> to offset the mood of text, but use <em> to make text emphatic.

Lorem Ipsum – All the facts – Lipsum generator

http://pl.lipsum.com/

Rebuilding the font cache

If you install a new font in linux, you need to rebuild the fonts cache: sudo fc-cache -f -v

Problems during update: Can’t exec “insserv”: No such file or directory at /usr/sbin/update-rc.d

sudo apt-get install –reinstall insserv sysv-rc

Convert timestamp to date

http://timestamptodate.com/

23 najlepsze sztuczki z wykorzystaniem SSH

http://jakilinux.org/aplikacje/23-najlepsze-sztuczki-z-wykorzystaniem-ssh/

RDFa – Linked Data in HTML

RDFa is an extension to HTML5 that helps you markup things like People, Places, Events, Recipes and Reviews. Search Engines and Web Services use this markup to generate better search listings and give you better visibility on the Web, so that people can find your website more easily. http://rdfa.info/