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bpftrace教程【官方】 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...见bpftrace完整参考。
该教程贡献者是Brendan Gregg, Netflix (2018), 基于他的DTrace教程系列 DTrace Tutorial。
1. 列出所有探针
bpftrace -l 'tracepoint:syscalls:sys_enter_*'
"bpftrace -l" 列出所有探测点，并且可以添加搜索项。
探针是用于捕...
How to format a UTC date as a `YYYY-MM-DD hh:mm:ss` string using NodeJS?
... The folk(s) behind Moment have an experiment called Luxon as of Feb 2018 moment.github.io/luxon/index.html
– alxndr
Feb 21 '18 at 5:34
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JavaScript: How to find out if the user browser is Chrome?
...me on iOS. Thanks to xinthose for letting us know about this!
UPDATE 4/18/2018 - change for Opera check
Edited check for Opera, checking window.opr is not undefined since now Chrome 66 has OPR in window.navigator.vendor. Thanks to Frosty Z and Daniel Wallman for reporting this!
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Maximum number of threads per process in Linux?
...t
echo 200000 > /proc/sys/kernel/pid_max
./100k-pthread-create-app
2018 update from @Thomas, on systemd systems:
/etc/systemd/logind.conf: UserTasksMax=100000
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How can I update npm on Windows?
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(Feb 2018; it must have gotten easier!) I've been working with Node and npm for a couple years. I get Node msi's from nodejs.org. Each msi I've used has upgraded from an older Node version without complaint or notice. Recent Node ...
Prevent double submission of forms in jQuery
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Update in 2018: I just got some points for this old answer, and just wanted to add that the best solution would be to make the operation idempotent so that duplicate submissions are harmless.
Eg, if the form creates an order, put a uni...
How to set Bullet colors in UL/LI html lists via CSS without using any images or span tags [duplicat
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What a shame! Until 2018 none of the major browser support this yet!
– Semmerket
Mar 17 '18 at 21:57
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Why there is no “Home” button in iPad simulator in iOS 5.1 SDK?
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2018 Post: This is still de facto.. Hit "H" twice or else you'll turn Siri on... ;)
– Friendly-Robot
May 7 '18 at 21:10
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Handling JSON Post Request in Go
... - that are not addressed in the most popular answer from 2013:
February 2018, go 1.10 introduced a new method json.Decoder.DisallowUnknownFields() which addresses the concern of detecting unwanted JSON-input
req.Body is already an io.Reader. Reading its entire contents and then performing json.U...
Arduino Sketch upload issue - avrdude: stk500_recv(): programmer is not responding
... If the board is an Arduino nano and was manufactured previously to Jan 2018 just selecting Processor > "ATmega328P (Old Bootloader)" will do the trick (arduino.cc/en/Guide/ArduinoNano#toc4)
– Bit-Man
Aug 6 '19 at 20:51
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