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Difference between Python datetime vs time modules
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the time module is principally for working with unix time stamps; expressed as a floating point number taken to be seconds since the unix epoch. the datetime module can support many of the same operations, but provides a more object oriented set of types, and also has som...
How to add NERDTree to your .vimrc
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Are you on a Windows or unix-y system?
If you're on a unix-y system you put plugins in ~/.vim/plugin. Here's what my plugin directory looks like:
$ ls ~/.vim/plugin
NERD_tree.vim scratch.vim scratchfind.vim
After that it starts working right a...
How to get the current time in Python
...me in "seconds since the epoch" as well as other utilities.
import time
Unix Epoch Time
This is the format you should get timestamps in for saving in databases. It is a simple floating point number that can be converted to an integer. It is also good for arithmetic in seconds, as it represents t...
How to create a file in a directory in java?
....separator + "hello" + File.separator + "hi.txt";
// Use relative path for Unix systems
File f = new File(path);
f.getParentFile().mkdirs();
f.createNewFile();
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Find lines from a file which are not present in another file [duplicate]
...<(sort -u file2)
Solution 2: (the first "working" answer I found) from unix.stackexchange:
fgrep -v -f file1 file2
Note that if file2 contains duplicate lines that don't exist at all in file1, fgrep will output each of the duplicate lines. Also note that my totally non-scientific tests on a si...
How can I replace a newline (\n) using sed?
...ream" of input, but it comprehends it in newline delimited chunks. It is a unix tool, which means it does one thing very well. The one thing is "work on a file line-wise". Making it do something else will be hard, and risks being buggy. The moral of the story is: choose the right tool. A great many ...
How can I split a shell command over multiple lines when using an IF statement?
...ndows/WSL/Cygwin etc users:
Make sure that your line endings are standard Unix line feeds, i.e. \n (LF) only.
Using Windows line endings \r\n (CRLF) line endings will break the command line break.
This is because having \ at the end of a line with Windows line ending translates to
\ \r \n.
As M...
Capturing Groups From a Grep RegEx
...on the delimiter _, and returns just field 2 (field numbers start at 1)).
Unix philosophy is to have tools which do one thing, and do it well, and combine them to achieve non-trivial tasks, so I'd argue that grep + sed etc is a more Unixy way of doing things :-)
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How to get the seconds since epoch from the time + date output of gmtime()?
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If you got here because a search engine told you this is how to get the Unix timestamp, stop reading this answer. Scroll down one.
If you want to reverse time.gmtime(), you want calendar.timegm().
>>> calendar.timegm(time.gmtime())
1293581619.0
You can turn your string into a time tu...
Is mongodb running?
I have installed mongodb and the php drivers on my unix server.
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