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How can I read large text files in Python, line by line, without loading it into memory?
I need to read a large file, line by line. Lets say that file has more than 5GB and I need to read each line, but obviously I do not want to use readlines() because it will create a very large list in the memory.
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How can I parse a YAML file from a Linux shell script?
I wish to provide a structured configuration file which is as easy as possible for a non-technical user to edit (unfortunately it has to be a file) and so I wanted to use YAML. I can't find any way of parsing this from a Unix shell script however.
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Can you force Visual Studio to always run as an Administrator in Windows 8?
... This is the best solution I have come across. Now I can open .sln files from windows explorer again!
– Max Schilling
Oct 31 '12 at 15:50
39
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How to write logs in text file when using java.util.logging.Logger
...ve a situation in which I want to write all logs created by me into a text file.
10 Answers
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Node.js check if path is file or directory
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Objects returned from fs.stat() and fs.lstat() are of this type.
stats.isFile()
stats.isDirectory()
stats.isBlockDevice()
stats.isCharacterDevice()
stats.isSymbolicLink() (only valid with fs.lstat())
stats.isFIFO()
stats.isSocket()
NOTE:
The above solution will throw an Error if; for ex, the fil...
Convert PDF to clean SVG? [closed]
... letter in every piece of text, meaning if I change the text in its source file, it looks ugly.
9 Answers
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psql - save results of command to a file
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From psql's help (\?):
\o [FILE] send all query results to file or |pipe
The sequence of commands will look like this:
[wist@scifres ~]$ psql db
Welcome to psql 8.3.6, the PostgreSQL interactive terminal
db=>\o out.txt
db=>\dt
db=>\q
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In vim, how do I get a file to open at the same line number I closed it at last time?
I want to configure vim to open a file at the same place I left off at.
7 Answers
7
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Unlink of file Failed. Should I try again?
Something wrong is going on with one of the files in my local git repository. When I'm trying to change the branch it says:
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Only read selected columns
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Say the data are in file data.txt, you can use the colClasses argument of read.table() to skip columns. Here the data in the first 7 columns are "integer" and we set the remaining 6 columns to "NULL" indicating they should be skipped
> read....