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how to use sed, awk, or gawk to print only what is matched?
... +. I tried * instead and I added p tag for printing match:
sed -n '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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Changing default encoding of Python?
I have many "can't encode" and "can't decode" problems with Python when I run my applications from the console. But in the Eclipse PyDev IDE, the default character encoding is set to UTF-8 , and I'm fine.
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Python Progress Bar
How do I use a progress bar when my script is doing some task that is likely to take time?
33 Answers
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How to get the first element of an array?
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John HartsockJohn Hartsock
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Get the index of the nth occurrence of a string?
Unless I am missing an obvious built-in method, what is the quickest way to get the n th occurrence of a string within a string?
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Why does Android use Java? [closed]
OK, this should really be asked to someone from Google, but I just want other opinions.
9 Answers
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Docker can't connect to docker daemon
...ser to the docker group.
sudo usermod -aG docker $(whoami)
Log out and log back in to ensure docker runs with correct permissions.
Start docker.
sudo service docker start
Mac OS X
As Dayel Ostraco says is necessary to add environments variables:
docker-machine start # Start virtual machine for d...
What is the correct way to check for string equality in JavaScript?
What is the correct way to check for equality between Strings in JavaScript?
9 Answers
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Reference one string from another string in strings.xml?
...ike to reference a string from another string in my strings.xml file, like below (specifically note the end of the "message_text" string content):
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Android - set TextView TextStyle programmatically?
Is there a way to set the textStyle attribute of a TextView programmatically? There doesn't appear to be a setTextStyle() method.
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