This page contains some regular expressions which have come in handy during our work. Code is in Perl style syntax.
Some Wikis use a
[[_link_][_label_]] notion, e.g.
[[http://progenetix.org][Progenetix resource]]. The following regular expression swaps those to Markdown links
[Progenetix resource](http://progenetix.org), assuming they don’t have a
] in their link or label…:
The following regular expression Markdown links
[Progenetix resource](http://progenetix.org) to HTML code, assuming there are no
) in link or label…:
/\[([^\]]+?)\]\(([^\)]+?)\)/<a href="$2" target="_BLANK">$1</a>/g
This is a nifty Perl one-liner, to re-arrange columns in a text file. Taken from a post on StackOverflow…
In the example,
-F\\t is for “tab-delimited”;
@F[1,0,2..$#F] leads to columns (rather values per line) 1 and 2 being swapped (i.e. index 0 and 1), and 3 to last being left in place.
perl -F\\t -nlae 'print join("\t", @F[1,0,2..$#F])' inputfile
Based on this example it should also be easy to remove columns or change the delimiter…