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What does the “map” method do in Ruby?
...(hashes, arrays), you can declare each of those elements inside your block pipes like so:
[["audi", "black", 2008], ["bmw", "red", 2014]].each do |make, color, year|
puts "make: #{make}, color: #{color}, year: #{year}"
end
# Output:
# make: audi, color: black, year: 2008
# make: bmw, color: red, ...
移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...通过window.innerWidth 来获取，但在Android 2, Oprea mini 和 UC 8中无法正确获取。
现在我们已经有两个viewport了：layout viewport 和 visual viewport。但浏览器觉得还不够，因为现在越来越多的网站都会为移动设备进行单独的设计，所...
How to get JavaScript caller function line number? How to get JavaScript caller source URL?
..."file.js", {buffer : true})
//Write here the loggers you use.
.pipe(logLine(['console.log']))
.pipe(gulp.dest('./build'))
})
gulp.task('default', ['log-line'])
This will attach the file name and line to all logs from console.log, so console.log(something) will become console....
How to get process ID of background process?
...
... which hoses you if foo happens to be multiple piped commands (eg. tail -f somefile.txt | grep sometext). In such cases, you will get the PID of the grep command from $! rather than the tail command if that's what you were looking for. You will need to use jobs or ps or t...
Convert dmesg timestamp to custom date format
...
minor improvement: you can remove 'tail -1 ' in the pipeline and just let awk eat lines and print from the final line in its buffer. local dmesg_bin=$(type -a dmesg | awk 'END { print $NF }')
– Brian Onn
Dec 3 '13 at 10:33
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Perform commands over ssh with Python
...".format(user=user, host=host, cmd='ls -l'), shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE).communicate()
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How to find the largest file in a directory and its subdirectories?
... 25 files by sorting based on the size of the files via the "sort -nr -k5" piped command.
Same but with human-readable file sizes:
find . -type f -exec ls -alh {} \; | sort -hr -k5 | head -n 25
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How to output something in PowerShell
..., assigns the aforementioned value, and being the last item on the command pipeline it calls the .toString() method and outputs the result to STDOUT (by default). A thing of beauty.
The other Write-* commands are specific to outputting the text to their associated streams, and have their place as s...
How do I create a crontab through a script
..., with a mandatory file name. Is there some trick to get it to accept the piped data instead?
– Mark Berry
Aug 16 '14 at 20:21
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Why is “origin/HEAD” shown when running “git branch -r”?
...git remote show origin
* remote origin
Fetch URL: git@github.com:walkerh/pipe-o-matic.git
Push URL: git@github.com:walkerh/pipe-o-matic.git
HEAD branch: master
Remote branch:
master tracked
Local branch configured for 'git pull':
master merges with remote master
Local ref config...