Snipplr - noah

(Bash) howto create/change SVN externals (link an SVN repo to another path in the repo, or to another project entirely)

Sun, 21 Mar 2010 13:05:06 GMT

Sometimes it is convenient to "pull in" code from an external source. This is especially useful if you have dependencies that you don't manage yourself.

(Bash) Create a directory recursively

Tue, 23 Oct 2007 02:01:14 GMT

Given the legal path of a nonexistent directory, create that path and directory.

(Perl) create new files

Tue, 03 Jul 2007 22:50:04 GMT

(Perl) Remove duplicate lines from a text file with Perl

Tue, 03 Jul 2007 22:06:34 GMT

*[Found at Google Answers.](http://answers.google.com/answers/threadview?id=25196)* Sometimes I get a big list of things, and some of the things occur multiple times in the same list. To make the list easier to read, I want to *delete* the duplicate lines. A good example is a list of files that have errors (maybe excerpted from an application sever's log files). In that case you have a newline-delimited list of file paths, and depending upon the situation, the same file path might be listed 4 or 5 times or more. Often, it is useful to have a list of just the files that are faulty, which can be produced by deleting all the duplicate lines. This script is for filtering just those kinds of list files. [Of course,](http://xkcd.com/378/ "emacs has a command for that") for **Emacs** users [there is a much easier way to remove duplicate lines:](http://everything2.com/title/useful%2520emacs%2520lisp%2520functions "useful emacs lisp functions"), if you have `uniq` installed on your system. `M-x sort-lines RET C-x h M-x shell-command-on-region RET uniq RET`

(Perl) Make a list of JPEGs into a slide show

Tue, 03 Jul 2007 22:02:15 GMT

Show jpegs one-per-page on a series of hyperlinked web pages. Purpose was to provide a linear viewing mechanism for jpegs on my Palm Tungsten C.