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Parallelize Bash script with maximum number of processes
...
Depending on what you want to do xargs also can help (here: converting documents with pdf2ps):
cpus=$( ls -d /sys/devices/system/cpu/cpu[[:digit:]]* | wc -w )
find . -name \*.pdf | xargs --max-args=1 --max-procs=$cpus pdf2ps
From the docs:
--max-procs=max-procs
-P max-procs
...
How to rename a table in SQL Server?
...e, referenced_database_name
--,sed.* -- Uncomment for all the columns
FROM
sys.sql_expression_dependencies sed
INNER JOIN
sys.objects o ON sed.referencing_id = o.[object_id]
LEFT OUTER JOIN
sys.objects o1 ON sed.referenced_id = o1.[object_id]
WHERE
referenced_entity_name = 'Customer'
So, all these...
How do I convert an interval into a number of hours with postgres?
...
If you convert table field:
Define the field so it contains seconds:
CREATE TABLE IF NOT EXISTS test (
...
field INTERVAL SECOND(0)
);
Extract the value. Remember to cast to int other wise you can get an unple...
Why is semicolon allowed in this python snippet?
...f you want to use other arguments in your one-liner, you'll have to import sys to get at sys.argv, which requires a separate import statement. e.g.
python -c "import sys; print ' '.join(sorted(sys.argv[1:]))" 5 2 3 1 4
1 2 3 4 5
...
How to go about formatting 1200 to 1.2k in java
... This code is sensitive to locale, for example in sv_SE locale 1000 converts to 10x10³, which is not matched correctly by the regexp.
– Joakim Lundborg
Feb 5 '14 at 22:53
2...
How to uninstall editable packages with pip (installed with -e)
...t {virtualenv}/lib/python2.7/site-packages/ (if not using virtualenv then {system_dir}/lib/python2.7/dist-packages/)
remove the egg file (e.g. distribute-0.6.34-py2.7.egg) if there is any
from file easy-install.pth, remove the corresponding line (it should be a path to the source directory or of a...
Django: How to manage development and production settings?
...or each stage.
At the top of your settings_dev.py file, add this:
import sys
globals().update(vars(sys.modules['settings']))
To import variables that you need to modify.
This wiki entry has more ideas on how to split your settings.
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Merging two arrays in .NET
...ds up: if you only want to iterate through the combined result, no need to convert it to an array. That final operation does an array copy. It won't have to do that if you iterate through an IEnumerable<int>. Of course, there could be good reasons to have it be an array.
–...
Generating random numbers in Objective-C
... = (((float)arc4random()/0x100000000)*(high_bound-low_bound)+low_bound);
Convert result to a rounder Integer value:
int intRndValue = (int)(rndValue + 0.5);
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Print current call stack from a method in Python code
...want to keep redirected output together), use:
traceback.print_stack(file=sys.stdout)
But getting it via traceback.format_stack() lets you do whatever you like with it.
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