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Git snippets

Michael — Thu, 22 Dec 2011 20:11:36 +0000

These are a view things that i had looked up to solve some problems and i plan to update this post regularly…

To push a new branch to remote

git push origin new_branch

To delete a remote branch

git push origin :new_branch

To push new tags

git push --tags origin

To delete a remote tag

git tag -d 12345
git push origin :refs/tags/12345

To reset a local branch to exactly match a remote branch

git fetch origin
git reset --hard origin/master

To abort a rebase

git rebase --abort

Changing the origin of your git repository (relocate the repository)

git config remote.origin.url [new origin url]

Last update: 2012/01/04

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Scripted network mounts with Windows

Michael — Mon, 12 Dec 2011 09:05:23 +0000

I have some services and scheduled tasks that call a Batch file under windows. The scheduled tasks cannot access network drives that the assigned user has defined, but luckily there is a “mount” pendant within Windows as well.

To mount a network share within the Batch script use:

net use t: \\server\share /persistent:no

The authentication is taken from the user that is assigned to the task.

If this not enough use

net use t: \\server\share /persistent:no /user:user@domain password

To unmount the share use

net use t: /delete

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Create reusable MySQL schema dumps

Michael — Thu, 16 Sep 2010 09:18:39 +0000

In case you need a MySQL schema transferred from one host to another and the schema names differ, you can ran into problems with a standard MySQL dump.

Use the following statement to create a schema dump that contains all table and view definitions as well as all stored procedures without a reference to the original schema:

 mysqldump -uroot -p name_of_the_original_schema --no-data --opt --routines | sed 's/`name_of_the_original_schema`.//g' > dump.sql

The dump will only contain the schema definition and no data. Calls to routines will not be prefixed with a schema name.

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

Michael — Thu, 19 Aug 2010 14:13:12 +0000

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

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Oracle NLS-Lang Settings

Michael — Fri, 13 Aug 2010 14:23:38 +0000

To use SQL*Plus Windows correctly, export NLS_LANG like so:

set NLS_LANG=GERMAN_GERMANY.WE8MSWIN1252

If you prefer the command line client SQL*Plus, export NLS_LANG like so:

set NLS_LANG=GERMAN_GERMANY.WE8PC850

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Using SQL*Plus without tnsnames.ora

Michael — Mon, 29 Mar 2010 07:40:32 +0000

As often, a quick reminder for me. I’m using the Oracle Instaclient on my Mac without a tnsnames.ora and i keep forgetting the connectstring syntax:

sqlplus USER/PASS@//HOST:PORT/SID

Extra bonus points: Through in rlwrap to get a nice commandline history and completion as used to in a standard shell:

rlwrap sqlplus USER/PASS@//HOST:PORT/SID

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SVN: Revert to previous version

Michael — Wed, 09 Sep 2009 20:56:29 +0000

Just a quick reminder:

To revert a complete working copy or a single file use:

svn merge -rHEAD:PREV .
# or
svn merge -rHEAD:PREV path/to/file
svn commit -m "reverted"

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Batchconvert ascii to utf8

Michael — Tue, 12 May 2009 08:41:17 +0000

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.

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XML / XSD Schema validation on Mac OS X

Michael — Fri, 16 Jan 2009 16:49:06 +0000

I found no fancy graphical xml validator on OS X, but this isn’t a problem.

OS X includes libxml which comes with xmllint.

To validate a xml file against a schema:

xmllint --noout --schema sitemap.xsd sitemap.xml

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Recursively md5sum all files in a directory tree

Michael — Sat, 25 Oct 2008 09:31:21 +0000

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.

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