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Bash command to sum a column of numbers [duplicate]
... With bc -l you can even add up float numbers. With cut you can select columns from the input: cat input.txt | cut -d ' ' -f 8 | paste -sd+ | bc -l will add all float numbers in column 8 of the input (space being the field separator).
– Arne
Sep 24 '...
How can I get the latest JRE / JDK as a zip file rather than EXE or MSI installer? [closed]
...mp; drop jdk1.6.0_31.msi or jre1.6.0_31.msi on the icon of UniExtract.exe.
Select "Extract Method: MSI Administrative Installer". Wait for the process to finish.
Enter the new created folder.
If you've drag-and-dropped jre1.6.0_31.msi you should have a jre1.6.0_31 folder
Follow all levels inside an...
Passing ssh options to git clone
...fig file first then fall back to $GIT_SSH_COMMAND.
This is useful for selecting different private keys targetting the
same host (e.g. github)
core.sshCommand:
If this variable is set, git fetch and git push will use the specified command instead of ssh when they need to connect to a re...
Use Font Awesome Icon As Favicon
...will display on Safari's pinned tabs and also regular tabs if the user has selected the "Show website icons in tabs" option.
Example HTML for a color bookmark icon:
<head>
<link rel=mask-icon href=https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.14/svgs/solid/rocket.svg color...
Visual Studio Clicking Find Results Opens Code in Wrong Window
...cking the Find Results window using the very bottom of the window position selectors.
The files open in the same position as the Find Results when the window is docked in the positions immediately next to the centre position.
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PHP sprintf escaping %
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sprintf("SELECT * FROM ... WHERE name LIKE '%%%s%%%s%%'", $fname, $lname); -- Ugly but it works!
– Jan Hettich
Oct 8 '11 at 22:57
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Python list directory, subdirectory, and files
...n i[2]] for i in os.walk('./')] for val in sublist]
# Meta comment to ease selecting text
The outer most val for sublist in ... loop flattens the list to be one dimensional. The j loop collects a list of every file basename and joins it to the current path. Finally, the i loop iterates over all di...
How to check null objects in jQuery
...
You can use the length property of the jQuery collection returned by your selector:
if ( $('#myDiv').length ){}
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Frame Buster Buster … buster code needed
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This answer or mine should be selected :)
– user1646111
Sep 2 '13 at 12:12
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What's the Best Way to Shuffle an NSMutableArray?
...[self count];
for (uint i = 0; i < count - 1; ++i)
{
// Select a random element between i and end of array to swap with.
int nElements = count - i;
int n = arc4random_uniform(nElements) + i;
[self exchangeObjectAtIndex:i withObjectAtIndex:n];
}
}
@end
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