argparseis the best library to use to parse command-line arguments in Python. It is included in Python standard libaries (which menas that you can use it out of the box).It is suggestedd that you always log a parsed Namespace object so that you can check whether it is as expected.
Hands on the Python Module argparse
argparseis the best library to use to parse command-line arguments in Python. It is included in Python standard libaries (which menas that you can use it out of the box).It is suggestedd that you always log a parsed Namespace object so that you can check whether it is as expected.
Advanced Use of "head" and "tail"
It is suggested that you use Python instead of Shell to manipulate text files!!
Besides passing an unsigned integer as parameter to the option -n,
you can also pass a signed integer to it.
When a signed integer is passed to -n,
it means from/to (inclusive/exclusive similar to …
Print Rows from a Text File
It is suggested that you use Python instead of Shell to manipulate text files!
Please refer to
Advanced Use of "head" and "tail"
on how to use head and tail for printing rows from a text file.
These 2 commands are convenient when you want to take head/tail rows …
Sample Lines from a File Using Command Line
NOTE: the article talks about sampling "lines" rather than "records".
If a records can occupy multiple lines,
e.g., if any field contains a new line (\n),
the following tutorial does not work
and you have to fall back to more powerful tools such as Python or R.
Let's say …