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Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
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Let's you examine, for example, whether infrastructure folks really provisioned the correct setup.
Java 64-bit checklist
1. check if hardware is 64-bit capable by looking for lm flag
grep -l 'flags.*\<lm\>' /proc/cpuinfo
2. check if kernel is 64-bit
getconf LONG_BIT | grep '64'
3. check if java is 64-bit (simply look for 64-bit in output - if present, then it is, if absent, then it is 32-bit)
java -version
Lauching an app including jars in an adjacent lib folder to its classpath
Search for java explicit incrementation in order to replace it with postfix or assignment operator
This command find which of your zip (or jar) files (when you have lots of them) contains a file you're searching for. It's useful when you have a lot of zip (or jar) files and need to know in which of them the file is archived.
It's most common with .jar files when you have to know which of the .jar files contains the java class you need.
To find in jar files, you must change "zip" to "jar" in the "find" command. The [internal file name] must be changed to the file name you're searching that is archived into one of the zip/jar files.
Before run this command you must step into the directory that contains the zip or jar files.
Count your source and header file's line numbers
For example for java change the command like this
find . -name '*.java' -exec cat {} \;|wc -l
When a large maven release goes wrong, by deploying just some of the artifacts letting others behind, some projects got wrong SNAPSHOT versions. This command comes to help!
Tip: replace sed's regex by your version numbers
You have openjdk and sun java installed. Many of your java plugins will not work properly. Something called IcedTea (the java web plugin) keeps crashing. Run this and select sun java to use sun java.
Find the source file which contains most number of lines in your workspace
:)
Useful command to get information about running java process and treads, to see log look into the default log for your java application
This command allows you to see a preview of a picture via the terminal. It can be usefull when you are ssh'ing your server without X-forwarding.
To have en example of the output you can get with this command see http://www.vimeo.com/3721117
Download at http://inouire.net/image-couleur.html
Sources here: http://inouire.net/archives/image-couleur_source.tar.gz
If you have a JAR that is not in a central Maven repository this will add it to your repository.