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How to monitor the memory usage of Node.js?
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On Linux/Unix (note: Mac OS is a Unix) use top and press M (Shift+M) to sort processes by memory usage.
On Windows use the Task Manager.
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Converting a column within pandas dataframe from int to string
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0.7.0, come with python 2.7 on Ubuntu system
– Malfet
Jul 31 '13 at 13:11
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Including all the jars in a directory within the Java classpath
...ainClass
notice the *.jar, so the * wildcard should be used alone.
On Linux, the following works:
java -cp "Test.jar:lib/*" my.package.MainClass
The separators are colons instead of semicolons.
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how to check redis instance version?
...redis_git_dirty:0
redis_build_id:9c3b73db5f7822b7
redis_mode:standalone
os:Linux 2.6.32.43-tlinux-1.0.26-default x86_64
arch_bits:64
multiplexing_api:epoll
gcc_version:4.9.4
process_id:5034
run_id:a45b2ffdc31d7f40a1652c235582d5d277eb5eec
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How to gzip all files in all sub-directories into one compressed file in bash
...y be best:
zip -r file.zip folder_to_zip
unzip filenname.zip
for other linux users or your self tar is great
tar -cvzf filename.tar.gz folder
tar -cvjf filename.tar.bz2 folder # even more compression
#change the -c to -x to above to extract
One must be careful with tar and how things are t...
How to convert floats to human-readable fractions?
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From Python 2.6 on there is the fractions module.
(Quoting from the docs.)
>>> from fractions import Fraction
>>> Fraction('3.1415926535897932').limit_denominator(1000)
Fraction(355, 113)
>>> from mat...
Enable Vim Syntax Highlighting By Default
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Edit your $HOME/.vimrc (Unix/Linux/OSX) or $HOME/_vimrc (Windows) to include the following line:
syntax on
EDIT
If your syntax highlighting doesn't work when you start Vim, you probably don't have a
$HOME/.vimrc or $HOME/_vimrc (known collectively as...
find -exec cmd {} + vs | xargs
... also a GNU find (and GNU xargs) option which is missing from a lot of non-Linux systems, so the portability argument isn't as valid. Using just -print and leaving the -0 off of xargs, however, is very portable.
– dannysauer
May 27 '09 at 20:30
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Base64: What is the worst possible increase in space usage?
...ng base64 encoded data into a text file on Windows it will add 2 bytes, on Linux 1 byte for each line.
The increase from the actual encoding has been described above.
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Embedding DLLs in a compiled executable
...ge: assembly generated on Windows is no longer binary compatible with mono Linux. That means, you cannot deploy the assembly onto Linux mono directly.
– Tyler Long
Jun 17 '14 at 12:40
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