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How to replace a string in multiple files in linux command line
... If anybody want to look for more options, there is an answer on unix stack exchange which covers more use cases site unix.stackexchange.com/a/112024/13488
– Reddy
May 22 '15 at 9:40
...
How do I get time of a Python program's execution?
...
In Linux or Unix:
$ time python yourprogram.py
In Windows, see this StackOverflow question: How do I measure execution time of a command on the Windows command line?
For more verbose output,
$ time -v python yourprogram.py
Comm...
Is it acceptable and safe to run pip install under sudo?
...omeone who asks such an entry level question is probably not familiar with unix's permission system and therefore running a 1-user install it doesn't matter. Also your answer actually fails to address the use case of me actually WANTING to install to global packages. After doing that I could easily ...
Test whether a glob has any matches in bash
... is a bash-specific built-in command and is not part of the POSIX standard Unix shell specified built-in commands. pubs.opengroup.org/onlinepubs/9699919799 pubs.opengroup.org/onlinepubs/9699919799/utilities/… Therefore, avoid using it in scripts where portability to other shells is a concern.
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How to get current timestamp in milliseconds since 1970 just the way Java gets
... the std::chrono library. You can use it to get the milliseconds since the Unix Epoch like this:
#include <chrono>
// ...
using namespace std::chrono;
milliseconds ms = duration_cast< milliseconds >(
system_clock::now().time_since_epoch()
);
...
Notifier 通知扩展：功能强大的Android通知管理工具，支持通知通道、意图、...
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示例说明
此示例展示如何编程提醒功能。目的是诱导用户定期打开应用程序。
需求 Requirements：
通知在应用程序关闭后经过定义的时间段后打开
如果通知在定义的时间段内...
Can I install Python 3.x and 2.x on the same Windows computer?
...tually...
#!/bin/env python3.6
Update
My solution works perfectly with Unix, after a quick search on Google, here is the Windows solution:
#!c:/Python/python3_6.exe -u
Same thing: in front of your script.
share
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Python error “ImportError: No module named”
...n-printing, perhaps a carriage-return (end-of-line in Windows is CR/LF; in unix it is LF only), or perhaps a CTRL-Z (windows end-of-file).
You used WinSCP to copy the file to your unix box.
WinSCP thought: "This has something that's not basic text; I'll put a .bin extension to indicate binary data."...
Can't compare naive and aware datetime.now()
...ime = challenge.datetime_end.replace(tzinfo=utc)
BTW, you could format a UNIX timestamp in datetime.datetime object with timezone info as following
d = datetime.datetime.utcfromtimestamp(int(unix_timestamp))
d_with_tz = datetime.datetime(
year=d.year,
month=d.month,
day=d.day,
hou...
Why do you need to put #!/bin/bash at the beginning of a script file?
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It's called a shebang. In unix-speak, # is called sharp (like in music) or hash (like hashtags on twitter), and ! is called bang. (You can actually reference your previous shell command with !!, called bang-bang). So when put together, you get haSH-BA...