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Get MD5 checksum from a pipe stream and do not alter it

Convert a string to

Get number of users on a minecraft server
I'm flat-out surprised that minecraft directory services require servers install multiple modifications to their server code, when the directories could fetch this information on their own.

Mirror rubygems.org
https://github.com/rubygems/rubygems-mirror/issues/20

Random number generation within a range N, here N=10

shutdown pc in 4 hours without needing to keep terminal open / user logged in.
This way, you can specify how many hours in which you want your machine to shut down.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

Define a quick calculator function
POSIX compliant arithmetic evaluation. = 10*2+3

Lists unambigously names of all xml elements used in files in current directory
This set of commands was very convenient for me when I was preparing some xml files for typesetting a book. I wanted to check what styles I had to prepare but coudn't remember all tags that I used. This one saved me from error-prone browsing of all my files. It should be also useful if one tries to process xml files with xsl, when using own xml application.

Add all unversioned files to svn
No need for grep, let awk do the match. This will not behave properly if the filenames contains whitespace, which is awk's default field separator.

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