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sed error: “invalid reference \1 on `s' command's RHS”
I run several substitution commands as the core of a colorize script for maven .
One of the sed commands uses a regular expression which works find in the shell as discussed here . The current (not working) implementation can be found here .
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Detect & Record Audio in Python
...s recorded to file
wavfile.close()
I think this will help.It is a simple script which will check if there is a silence or not.If silence is detected it will not record otherwise it will record.
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When do I use the PHP constant “PHP_EOL”?
... Should it be used as the end-line character when writing a command-line script?
– Thomas Owens
Sep 24 '08 at 17:37
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Insert Update trigger how to determine if insert or update
...LETE two different rows (insert new row and delete another row in the same script), is it possible the trigger that's set up in the way above will actually identify that as an UPDATE (even though the intent is not actually an update) due to there being data in the INSERTED/DELETED sql-tables?
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How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...'s (especially UNIX) by design allow a child process to inherit all File-descriptors (FD) from parents. Thus all the sockets (in UNIX like OS are also part of FD) that a process A listening to, can be listened by many more processes A1, A2, .. as long as they are related by parent-child relation to ...
How to clone all repos at once from GitHub?
...set PAGE to the desired page number you want to download).
Here is a shell script that does the above: https://gist.github.com/erdincay/4f1d2e092c50e78ae1ffa39d13fa404e
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Start ssh-agent on login
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This script worked for me when I put it in my ~/.bashrc file (not my ~/.profile or ~/.bash_profile). The first time I open a local console it prompts for the passphrase, everything works from that point on without further promptin...
Installing PDO driver on MySQL Linux server
... keep it and give up mysql_.
Several years ago the MySQL team published a script to migrate to MySQLi. I don't know if it can be customised, but it's official.
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Can media queries resize based on a div element instead of the screen?
... on the size of a certain div element on your page, you'll have to use JavaScript to observe changes in the size of that div element instead of media queries.
Alternatively, with more modern layout techniques such as flexbox and standards such as custom properties, you may not need media or element ...
conditional unique constraint
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Okay, I posted a sample script that will help you prove what I'm talking about. I tested it and it works. If you look at the two commented lines, you'll see the message I get. Nota bene, in my implementation, I merely ensure that you cannot add a...