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Linux - Replacing spaces in the file names
I have a number of files in a folder, and I want to replace every space character in all file names with underscores. How can I achieve this?
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Multiplication on command line terminal
... floats. Try echo '4 k 50 7 / p' | dc. The output is 7.1428. The k command sets the precision.
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Jun 15 '12 at 0:58
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How to get users to read error messages?
If you program for a nontechnical audience, you find yourself at a high risk that users will not read your carefully worded and enlightening error messages, but just click on the first button available with a shrug of frustration.
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Join a list of items with different types as string in Python
I need to join a list of items. Many of the items in the list are integer values returned from a function; i.e.,
9 Answ...
How can prepared statements protect from SQL injection attacks?
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Here is SQL for setting up an example:
CREATE TABLE employee(name varchar, paymentType varchar, amount bigint);
INSERT INTO employee VALUES('Aaron', 'salary', 100);
INSERT INTO employee VALUES('Aaron', 'bonus', 50);
INSERT INTO employee VA...
Convert file: Uri to File in Android
What's the easiest way to convert from a file: android.net.Uri to a File in Android?
18 Answers
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Set selected index of an Android RadioGroup
Is there a way to set the selected index of a RadioGroup in android, other than looping through the child radiobuttons and selecting checking the radio button at the selected index?
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How to export table as CSV with headings on Postgresql?
I'm trying to export a PostgreSQL table with headings to a CSV file via command line, however I get it to export to CSV file, but without headings.
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How to draw an empty plot?
...y on which number you want to plot them (default is x axis unless you have set horz = TRUE in these functions.
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Filter dataframe rows if value in column is in a set list of values [duplicate]
... '210302' ...
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Finally, contains can ignore case (by setting case=False), allowing you to be more general when specifying the strings you want to match.
For example,
str.contains('pandas', case=False)
would match PANDAS, PanDAs, paNdAs123, and so on.
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