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How to get the process ID to kill a nohup process?
...u could do something like this in the script:
nohup my_command > my.log 2>&1 &
echo $! > save_pid.txt
This will run my_command saving all output into my.log (in a script, $! represents the PID of the last process executed). The 2 is the file descriptor for standard error (stderr) a...
Maven check for updated dependencies in repository
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287
The Maven Versions plugin and its display-dependency-updates mojo are what you're looking for:...
Modifying a subset of rows in a pandas dataframe
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248
Use .loc for label based indexing:
df.loc[df.A==0, 'B'] = np.nan
The df.A==0 expression cre...
How can I read command line parameters from an R script?
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210
Dirk's answer here is everything you need. Here's a minimal reproducible example.
I made two ...
How to export all collections in MongoDB?
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26 Answers
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Manually raising (throwing) an exception in Python
...error: ValueError('Represents a hidden bug, do not catch this',)
Problem 2: Won't catch
And more specific catches won't catch the general exception:
def demo_no_catch():
try:
raise Exception('general exceptions not caught by specific handling')
except ValueError as e:
pri...
Select multiple records based on list of Id's with linq
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214
You can use Contains() for that. It will feel a little backwards when you're really trying to...
Which cryptographic hash function should I choose?
...flaw that allows collisions to be found in theoretically far less than the 2^80 steps a secure hash function of its length would require. The attack is continually being revised and currently can be done in ~2^63 steps - just barely within the current realm of computability. For this reason NIST is ...
How to discover number of *logical* cores on Mac OS X?
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812
You can do this using the sysctl utility:
sysctl -n hw.ncpu
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Creating an R dataframe row-by-row
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edited Feb 18 '19 at 2:37
Neil
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answered Sep...