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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Scripting’ Category

ρσℓα¢ķ͌͌͌͌͌͌͌͌͌͌͌͌͌͌ on Twitter : “The PowerShell console history file isn’t just useful for DFIR peeps, red team-ers should check it too! 4096 entries by default, here’s the path…”

Posted by jpluimers on 2020/01/15

Not sure why, but I checked a few of my systems and no  file at %userprofile%\AppData\Roaming\Microsoft\Windows\PowerShell\PSReadline\ConsoleHost_history.txt

Heck: no ConsoleHost_history.txt files on those systems anywhere.

[WayBack] ρσℓα¢ķ͌͌͌͌͌͌͌͌͌͌͌͌͌͌ on Twitter : “The PowerShell console history file isn’t just useful for DFIR peeps, red team-ers should check it too! 4096 entries by default, here’s the path: %userprofile%\AppData\Roaming\Microsoft\Windows\PowerShell\PSReadline\ConsoleHost_history.txt”

–jeroen

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Posted in CommandLine, Power User, PowerShell, PowerShell | Leave a Comment »

Python – list transformation; string formatting – Stack Overflow

Posted by jpluimers on 2020/01/08

Sometimes simple examples are the best: [WayBack] Python – list transformation – Stack Overflow.

Interactive example (note you can run and save at repl.it in either [WayBack] Repl.it – Python 3 or [WayBack] Repl.it – Python 2; you can run but not save it at [WayBack] Welcome to Python.org: interactive Python shell):

# Links the documentation are Python 2, though everything works in Python 3 as well.

x = [1,2,3,4,5,11]
print("x: ", repr(x))

y = ['01','02','03','04','05','11']
print("y: ", repr(y))

# List comprehension https://docs.python.org/2/tutorial/datastructures.html#list-comprehensions
# ... using `str.format()` (Python >= 2.6): https://docs.python.org/2/library/stdtypes.html#str.format and https://docs.python.org/2/library/string.html#formatstrings
y = ["{0:0>2}".format(v) for v in x]
print("y: ", repr(y))

# ... using the traditional `%` formatting operator (Python < 2.6): https://docs.python.org/2/library/stdtypes.html#string-formatting y = ["%02d" % v for v in x] print("y: ", repr(y)) # ... using the format()` function (Python >= 2.6): https://docs.python.org/2/library/functions.html#format and https://docs.python.org/2/library/string.html#formatstrings
# this omits the "{0:...}" ceremony from the positional #0 parameter
y = [format(v, "0>2") for v in x]
print("y: ", repr(y))

# Note that for new style format strings, the positional argument (to specify argument #0) is optional (Python >= 2.7) https://docs.python.org/2/library/string.html#formatstrings
y = ["{:0>2}".format(v) for v in x]
print("y: ", repr(y))

# Using `lambda`
# ... Python < 3 return a list y = map(lambda v: "%02d" %v, x) print("y: ", repr(y)) # ... Python >= 3 return a map object to iterate over https://stackoverflow.com/questions/1303347/getting-a-map-to-return-a-list-in-python-3-x/1303354#1303354
y = list(map(lambda v: "%02d" %v, x))
print("y: ", repr(y))

Output:

Python 3 Python 2
Python 3.6.1 (default, Dec 2015, 13:05:11)
[GCC 4.8.2] on linux
   
x:  [1, 2, 3, 4, 5, 11]
y:  ['01', '02', '03', '04', '05', '11']
y:  ['01', '02', '03', '04', '05', '11']
y:  ['01', '02', '03', '04', '05', '11']
y:  ['01', '02', '03', '04', '05', '11']
y:  ['01', '02', '03', '04', '05', '11']
y:  <map object at 0x7fe1218200b8>
y:  ['01', '02', '03', '04', '05', '11']
Python 2.7.10 (default, Jul 14 2015, 19:46:27)
[GCC 4.8.2] on linux
   
('x: ', '[1, 2, 3, 4, 5, 11]')
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")
('y: ', "['01', '02', '03', '04', '05', '11']")

–jeroen

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Posted in Conference Topics, Conferences, Development, Event, Python, Scripting, Software Development | Leave a Comment »

python – Why does “return list.sort()” return None, not the list? – Stack Overflow

Posted by jpluimers on 2020/01/02

list.sort sorts the list in place, i.e. it doesn’t return a new list. Just write

newList.sort()
return newList

The above answer is goden as performing return list.sort() bytes me often, because Python is usually an environment using the functional approach.

Answer from [WayBack] python – Why does “return list.sort()” return None, not the list? – Stack Overflow

Background information:

–jeroen

Posted in Development, Python, Scripting, Software Development | Leave a Comment »

Using a main check __main__ to call a main function in Python

Posted by jpluimers on 2020/01/01

[WayBack] __main__ — Top-level script environment — Python 3 documentation recommends code like this:

if __name__ == "__main__":
    # execute only if run as a script
    main()

This has many cool possibilities, including these that I like most as a beginning Python developer:

  • having your def main(): function in a separate source file
  • allowing to return prematurely from your main function (you cannot do this from the main block)
  • allowing a file to distinguish if it is being loaded as a module, or as a main program

Related:

–jeroen

Posted in Conference Topics, Conferences, Development, Event, Python, Scripting, Software Development | Leave a Comment »

How to make a self extracting archive runs your setup.exe, 7zip -sfx

Posted by jpluimers on 2020/01/01

For my link archive step by step instruction on the command-line which can be automated:

Via:

–jeroen

Posted in 7zip, Batch-Files, Compression, Development, Power User, Scripting, Software Development | Leave a Comment »

 
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