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Dealing with “java.lang.OutOfMemoryError: PermGen space” error
...ingEnabled -XX:+CMSPermGenSweepingEnabled" - Restarted tomcat using: sudo /etc/init.d/tomcat6 start
– sami
Dec 10 '10 at 14:44
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Create a .csv file with values from a Python list
...l fields, only fields with quotes and seperators, only non numeric fields, etc) and how to esacpe control charecters (double quotes, or escaped strings). If your values are simple, string.join will probably be OK but if you're having to manage lots of edge cases, use the module available.
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Getting MAC Address
... iface you want the MAC for since many can exist (bluetooth, several nics, etc.).
This does the job when you know the IP of the iface you need the MAC for, using netifaces (available in PyPI):
import netifaces as nif
def mac_for_ip(ip):
'Returns a list of MACs for interfaces that have given IP...
How to group time by hour or by 10 minutes
... to group by a longer period then 60 minutes, say 720, which is half a day etc.
Shell - Write variable contents to a file
...ue will be converted to a single space, glob expressions will be expanded, etc.
– Charles Duffy
Jul 23 '12 at 19:54
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node.js shell command execution
...arg1 arg2 ... "). Your foo.sh script can reference these using $1, $2 ... etc.
– Tony O'Hagan
Jul 7 '18 at 1:13
If th...
How do I move to end of line in Vim?
... to generally move around in command mode, specifically, jumping to lines, etc. But what is the command to jump to the end of the line that I am currently on?
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How does delete[] “know” the size of the operand array?
...h to use type information to track the size of non-array heap allocations, etc. Forcing the allocator to store the requested size (so that you wouldn't need to pass the array size yourself) might be a small encumbrance, but it could have performance impacts on conceivable allocator designs.
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Optimising Android application before release [closed]
...a objects such as XmlPullParserFactory/BitmapFactory/StringBuilder/Matcher etc.
For more battery tricks see Coding for Life - Battery Life, That Is.
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Failed to locate the winutils binary in the hadoop binary path
... not contain some windows native components (like winutils.exe, hadoop.dll etc). These are required (not optional) to run Hadoop on Windows.
So you need to build windows native binary distribution of hadoop from source codes following "BUILD.txt" file located inside the source distribution of hadoo...