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how to use sed, awk, or gawk to print only what is matched?
... 's/^.*abc\([0-9]*\)xyz.*$/\1/p' example.txt
For matching at least one numeric character without +, I would use:
sed -n 's/^.*abc\([0-9][0-9]*\)xyz.*$/\1/p' example.txt
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Abstraction VS Information Hiding VS Encapsulation
Can you tell me what is the difference between abstraction and information hiding in software development?
22 Answers
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Reset push notification settings for app
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Technical Note TN2265: Troubleshooting Push Notifications
The first time a push-enabled app
registers for push notifications, iOS
asks the user if they wish to receive
notifications for that app. Once the
user has responded to this alert it is
not presented again unless the device
i...
When to use an interface instead of an abstract class and vice versa?
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This was ery helpful: Interfaces do not express something like "a Doberman is a type of dog and every dog can walk" but more like "this thing can walk". Thank you
– aexl
Nov 9 '14 at 11:07
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How can I set up an editor to work with Git on Windows?
...notepad.exe as their default editor.
Configuring git config format.commitMessageColumns 72 will be picked up by the notepad wrapper and line-wrap the commit message after the user edits it.
See commit 69b301b by Johannes Schindelin (dscho).
And Git 2.16 (Q1 2018) will show a message to tell the...
How to draw border on just one side of a linear layout?
...t;/shape>
</item>
</layer-list>
EDITED
As many including me wanted to have a one side border with transparent background, I have implemented a BorderDrawable which could give me borders with different size and color in the same way as we use css. But this could not be used via xml....
Where to find the win32api module for Python? [closed]
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'pywin32' is its canonical name.
http://sourceforge.net/projects/pywin32/
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How to differentiate single click event and double click event?
...button in li with id "my_id" . I attached two jQuery events with this element
18 Answers
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How to remove duplicate values from an array in PHP
... @Ian - Note that array_unique() is not intended to work on multi dimensional arrays.
– Peter Ajtai
Aug 19 '10 at 19:45
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Cron and virtualenv
I am trying to run a Django management command from cron. I am using virtualenv to keep my project sandboxed.
9 Answers
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