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How to replace strings containing slashes with sed?
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add \ before special characters:
s/\?page=one&/page\/one\//g
etc.
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How to add a new audio (not mixing) into a video using ffmpeg?
...filter allows you to choose the desired channel layout (mono, stereo, 5.1, etc) and the sample rate.
ffmpeg -i video.mp4 -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 \
-c:v copy -shortest output.mp4
Also see
Combine two audio streams into one
FFmpeg Wiki: Audio Channel Manipulation...
How to specify test directory for mocha?
...oss-platform issues in the other answers (double vs single quotes, "find", etc.)
To have mocha run all js files in the "test" directory:
"scripts": {
"start": "node ./bin/www", -- not required for tests, just here for context
"test": "mocha test/**/*.js"
},
Then to run only the smoke...
PHP array_filter with arguments
...eric NumericComparisonFilter with methods like isLower, isGreater, isEqual etc. Just a thought — and a demo...
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How to add to the PYTHONPATH in Windows, so it finds my modules/packages?
...han_amn I mean the wrapping directory that contains the lib, bin, libexec, etc. Typically these directories are named Python[VERSION_NUMBER]/, but I have also seen python/[VERSION_NUMBER]. Hope this helps
– Delicia Brummitt
May 11 '17 at 14:18
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Node.js app can't run on port 80 even though there's no other process blocking the port
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Short answer: You can allow node access to that port using:
setcap 'cap_net_bind_service=+ep' /path/to/nodejs
long answer
Edit:
May not work on new node versions
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Xcode 5 & Asset Catalog: How to reference the LaunchImage?
...tually an asset catalog on the device. If you look using iFunBox/iExplorer/etc (or on the simulator, or in the build directory) you can see the final names, and then write code to use them - eg. for an iOS7-only iPhone-only project, this will set the right launch image:
NSString *launchImage;
if (...
How do you run a SQL Server query from PowerShell?
...For anyone wondering, to dispose an object, just add $connection.dispose() etc. I don't know if it makes any difference though
– Nick.McDermaid
Aug 15 '17 at 11:34
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A numeric string as array key in PHP
...andled as string since these were names for input fields (as in shoe sizes etc,..)
When I used $data = array_merge($data, $extra); PHP would 're-order' the keys. In an attempt doing the ordering, the integer keys (I tried with
cleanest way to skip a foreach if array is empty [duplicate]
...anguage. PHP variable can store anything, that's why is_array, is_numeric, etc are needed functions.
– Daniel Wu
Nov 22 '19 at 5:41
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