semi automatic doc tagging for cdn.rawgit.com links

mkdoctag

#! /bin/bash

#
# This script updates links in *.md files that look like
# https://cdn.rawgit.com/mygithub/myrepo/doctag201702041450/doc/some_doc.html
# to new timestamps and creates the corresponding git tags.
#
# Run it at root of the repo before checking in changes, and be sure to include `--tags` when you push to remotes.
#

CURTAG=`cat doc/doctag`
NEWTAG=`date '+doctag%Y%m%d%H%M'`

# skips updates in "node_modules" and "doc" folders
find . -name node_modules -prune -o -name doc -prune -o -name '*.md' -print -exec sed -i '' "s/doctag[0-9]*/$NEWTAG/g" {} \;

echo $NEWTAG > doc/doctag
git tag -d $CURTAG
git tag $NEWTAG