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Tag Archives: Shell

Preparing for Rails 2.3.9

06-Sep-10

As much as i wish to upgrade my Rails 2.3.x application Daily Fratze to the newest tag of the Rails 2.3.x branch, i cannot.

First there was the epic fail of release 2.3.6, that broke all HTML Helpers and forced the Rails XSS protection upon us. This release was immediately followed by 2.3.7 and 2.3.8. With my tests, this version was still enforcing Rails XSS and breaking helpers like “h”.

Rails 2.3.9, released last week, puts en end to this.

I just was about to upgrade, when i read this error: Textarea input silently truncated in 2.3.8!. The input of a textarea is truncated if the text entered consists of two lines or more with one of them quoted as the Rack middleware messes with the input.

I can confirm that this behavior still applies to 2.3.9.

It’s a shame, that all the talk is about Rails 3 with bugs like this in an older branch. I understand that this is a Rack problem but as it is already fixed in newer Rack versions, i cannot understand that the Rails team doesn’t bump the required Rack version respectively has no tests for problems like these.

So i’m hoping that Rails 2.3.10 sees the light of day anytime soon.

Anyway, as Rails 2.3.9 suddenly uses a new interpolation syntax for the translation files (“Hello {{name}}” becomes ” Hello %{name}”), here is a one-liner to update i18n files to the new syntax:

find . -iname "*.yml" -exec sed 's/{{\([^\{\}]*\)}}/%{\1}/g' -i {} \;

If you like some less escapism use xargs

find . -iname "*.yml"  | xargs sed 's/{{\([^{}]*\)}}/%{\1}/g' -i;

Commands need to be executed inside your locale directory.

Find all non “.java” files but not in .svn directories

19-Aug-10

I’m migrating some old projects to Maven and i need to move all resources out of the source tree.

find . -type d -name '\.svn' -prune -o -type f -not -iname "*.java" -print
  • Prune every directory named ‘.svn’
  • Or
  • Type is file and the name ends not with “*.java”

I tried to create the necessary directories within the same command but after about half an hour xargs trial and error, i’ll do it manually, the list of files is small enough ;)

Batchconvert ascii to utf8

12-May-09

Next time i see umlauts in source, I’ll scream. Loud.

In the mean time I try this:

find . -iname "*.java" -exec sh -c 'iconv -f cp1252 -t utf-8 {} > {}.utf8' \;
for i in `(find . -name "*.utf8")`; do mv $i ${i/.utf8/}; done

Before you try this, make a backup of your files. It worked for me but i don’t guaranty that your files won’t vanish.

Recursively md5sum all files in a directory tree

25-Oct-08

After a server crash a wanted to compare all actual files with the backuped data. An easy way is to compare the md5 hashes like that:

First create recursively md5 hashes from all files in that directory:

find ./backup -type f -print0 | xargs -0 md5sum > /checksums_backup.md5

Then check the actual data:

md5sum -c checksums_backup.md5

I was lucky, no files where damaged.

Find all files that changed in the last 24hours

16-Aug-07

On a unix box just type in the directory you want to search for changed files:

find . -mtime -1 -print
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