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Find and Replace Inside a Text File from a Bash Command
What's the simplest way to do a find and replace for a given input string, say abc , and replace with another string, say XYZ in file /tmp/file.txt ?
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How do you find the disk size of a Postgres / PostgreSQL table and its indexes
I'm coming to Postgres from Oracle and looking for a way to find the table and index size in terms of bytes/MB/GB/etc , or even better the size for all tables. In Oracle I had a nasty long query that looked at user_lobs and user_segments to give back an answer.
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What are the differences between local branch, local tracking branch, remote branch and remote track
...o origin using the git push command with a -u option (as shown above), you set up the local branch myNewBranch to track the remote tracking branch origin/myNewBranch. This is needed to use git push and git pull without specifying an upstream to push to or pull from.
git checkout myNewBranch # ...
Execute Python script via crontab
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Labels for radio buttons in rails form
... e.g. <%= f.label :contactmethod, 'SMS', :value => 'sms' %>. This sets the "for" attribute of the label tag correctly, which makes clicking the label select the appropriate radio button. In the answer above, simply using the label helper will cause the "for" attribute to be incorrect when t...
How to close TCP and UDP ports via windows command line
Does somebody knows how to close a TCP or UDP socket for a single connection via windows command line?
17 Answers
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Can't pickle when using multiprocessing Pool.map()
I'm trying to use multiprocessing 's Pool.map() function to divide out work simultaneously. When I use the following code, it works fine:
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Show just the current branch in Git
I tried looking for a special Git command for this, but I couldn't find one. Is there anything shorter or faster than the following?
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Is there any haskell function to concatenate list with separator?
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Format a date using the new date time API
...y, namely to allow different temporal types which consist of type-specific sets of supported built-in fields. The natural consequence is that not every possible field is supported by every type (and users can even define their own specialized fields). It is also possible to programmatically ask ever...