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The way to check a HDFS directory's size?
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Prior to 0.20.203, and officially deprecated in 2.6.0:
hadoop fs -dus [directory]
Since 0.20.203 (dead link) 1.0.4 and still compatible through 2.6.0:
hdfs dfs -du [-s] [-h] URI [URI …]
You can also run hadoop fs -help for more info and specifics...
How to get the part of a file after the first line that matches a regular expression?
...e matching line)
matchtext=TERMINATE
sed -e "1,/$matchtext/d"
## Print all the lines before the line containing the matching text:
## (from line-1 to BEFORE the matching line, NOT including the matching line)
matchtext=TERMINATE
sed -e "/$matchtext/,\$d"
The important points about replacing te...
Which is better: … or …
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Do you need a type attribute at all? If you're using HTML5, no. Otherwise, yes. HTML 4.01 and XHTML 1.0 specifies the type attribute as required while HTML5 has it as optional, defaulting to text/javascript. HTML5 is now widely implemented, so if you use th...
How do I list all remote branches in Git 1.7+?
... git branch -r , but that only lists remote branches that I've tracked locally. How do I find the list of those that I haven't? (It doesn't matter to me whether the command lists all remote branches or only those that are untracked.)
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Capistrano - clean up old releases
Usually when using capistrano, I will go and manually delete old releases from a deployed application. I understand that you can run cap deploy:cleanup but that still leaves 5 releases. Is this it's intended purpose? Is there another way to cleanup old releases to just 1 previous deploy?
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Tool for adding license headers to source files? [closed]
...tures:
handles UTF headers (important for most IDEs)
recursively updates all files in target directory passing given mask (modify the .endswith parameter for the filemask of your language (.c, .java, ..etc)
ability to overwrite previous copyright text (provide old copyright parameter to do this)
o...
Ukkonen's suffix tree algorithm in plain English
...thm.
First, a few preliminary statements.
What we are building, is basically like a search trie. So there
is a root node, edges going out of it leading to new nodes, and
further edges going out of those, and so forth
But: Unlike in a search trie, the edge labels are not single
characters. Instead...
disable all form elements inside div
is there a way to disable all fields (textarea/textfield/option/input/checkbox/submit etc) in a form by telling only the parent div name in jquery/javascript?
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Using TortoiseSVN how do I merge changes from the trunk to a branch and vice versa?
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The behavior depends on which version your repository has. Subversion 1.5 allows 4 types of merge:
merge sourceURL1[@N] sourceURL2[@M] [WCPATH]
merge sourceWCPATH1@N sourceWCPATH2@M [WCPATH]
merge [-c M[,N...] | -r N:M ...] SOURCE[@REV] [WCPATH]
merge --reintegrate SOURCE[@REV] [WCPATH]
Subvers...
Algorithm to generate a crossword
...on which probably isn't the most efficient, but it works well enough. Basically:
Sort all the words by length, descending.
Take the first word and place it on the board.
Take the next word.
Search through all the words that are already on the board and see if there are any possible intersections (...