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move_uploaded_file gives “failed to open stream: Permission denied” error

...make them globally writable (bad practice). Check apache process owner: $ps aux | grep httpd. The first column will be the owner typically it will be nobody Change the owner of images and tmp_file_upload to be become nobody or whatever the owner you found in step 1. $sudo chown nobody /var/www/ht...
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Different bash prompt for different vi editing mode?

... like this: More details, including how to install, are available at https://github.com/calid/bash share | improve this answer | follow | ...
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Instagram how to get my user id from username?

... check if its a valid request is by the cookie submitted in the header. If user_id exist in the cookie proeprty, it'll be considered a valid request. Check out the cookie property on the request header when you navigate to the URL shown – Kiong Jul 6 '18 at 15:...
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How to enter in a Docker container already running with a new TTY

...sion. I'm sure docker exec -it will eventually provide a fully-functional pseudo tty, but for now (Docker version 1.9.1), there are some shortcomings : github.com/docker/docker/issues/8755 – blong Jan 5 '16 at 3:11 ...
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How do you count the lines of code in a Visual Studio solution?

...ng more formal should be required. From a smallish solution's directory: PS C:\Path> (gci -include *.cs,*.xaml -recurse | select-string .).Count 8396 PS C:\Path> That will count the non-blank lines in all the solution's .cs and .xaml files. For a larger project, I just used a different ex...
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PowerShell: Setting an environment variable for a single command only

... Keith, we have a push-environmentblock and pop-environmentblock in Pscx for exactly this scenario ;-) – x0n Sep 14 '09 at 16:25 2 ...
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Error handling in getJSON calls

...k, Flask's jsonify f and SQLAlchemy) try: snip = Snip.query.filter_by(user_id=current_user.get_id(), id=snip_id).first() db.session.delete(snip) db.session.commit() return jsonify(success=True) except Exception, e: logging.debug(e) return jsonify(error="Sorry, we couldn't de...
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pandas three-way joining multiple dataframes on columns

... I'd put them in a list like this (generated via list comprehensions or loops or whatnot): dfs = [df0, df1, df2, dfN] Assuming they have some common column, like name in your example, I'd do the following: df_final = reduce(lambda left,right: pd.merge(left,right,on='name'), dfs) That way, your...
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How to get all subsets of a set? (powerset)

...h is the power set of A.""" length = len(A) l = [a for a in A] ps = set() for i in range(2 ** length): selector = f'{i:0{length}b}' subset = {l[j] for j, bit in enumerate(selector) if bit == '1'} ps.add(frozenset(subset)) return ps If you want exactly ...
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LEFT OUTER JOIN in LINQ

... in categories join p in products on c.Category equals p.Category into ps from p in ps.DefaultIfEmpty() select new { Category = c, ProductName = p == null ? "(No products)" : p.ProductName }; share | ...