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Threads vs Processes in Linux
...anisms available for communication between threads (futex's,shared memory, pipes, IPC) is also available for processes and run at the same speed.
– Russell Stuart
Apr 4 '14 at 3:26
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How can I call a custom Django manage.py command directly from a test driver?
...e, this will sort the out for you. It isn't quite perfect - and it doesn't pipe outputs yet - but it will use the test database. You can then test for database effects.
I am sure use of Micheal Foords mock module and also rewiring stdout for the duration of a test would mean you could get some more...
How to only find files in a given directory, and ignore subdirectories using bash
...e above symlinks pointed to found in the above pattern, would I just use a pipe? Something like find /dev -maxdepth 1 -name 'abc-*' | ls -l
– suffa
Oct 10 '11 at 16:11
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Parsing IPv6 extension headers containing unknown extensions
...ets need to arrive for a number of reasons. For example, if the MTU of the pipe has shrunk (perhaps packet encapsulation has happened because of PPPoE or a VPN), and the packet being sent is too large, an ICMP packet will be returned saying that the packet is too large.
– Bill ...
Why is printing to stdout so slow? Can it be sped up?
I've always been amazed/frustrated with how long it takes to simply output to the terminal with a print statement. After some recent painfully slow logging I decided to look into it and was quite surprised to find that almost all the time spent is waiting for the terminal to process the results.
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Selecting data frame rows based on partial string match in a column
...ogether (as in "pet" and "pip" occuring in a row of a dataframe as "peter piper")?
– nigus21
Feb 12 at 21:22
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Attach IntelliJ IDEA debugger to a running Java process
Is it possible to attach the IntelliJ IDEA debugger to a running Java process? If yes, how?
5 Answers
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Get last n lines of a file, similar to tail
... proc = subprocess.Popen(['tail', '-n', n + offset, f], stdout=subprocess.PIPE)
lines = proc.stdout.readlines()
return lines[:, -offset]
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Is there a way to chain multiple value converters in XAML?
I've got a situation in which I need to show an integer value, bound to a property on my data context, after putting it through two separate conversions:
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Why is creating a new process more expensive on Windows than Linux?
... from it. Consider a shell loop that spawns a lot of sed, awk, and grep in pipelines. Every command spawns a process and every pipe spawns a subshell and a new process in that subshell. Unix was designed with this very kind of usage in mind, which is why fast process creation remains the norm there....