Since my python knowledge is limimted, I've challenged myself to learn as much as possible to help me with my carrere. I'm currently trying to convert a shell script to python, just to give myself a task. There is one section of the script that I'm having issues converting and that is this line:
Code:
sha256 -C SHA256 image.iso
which basically checks the checksum of "image.iso" against a textfile called SHA256, which contains the correct checksum.
A sample of "SHA256" is below (ignore the same checksum everywhere, it's just for example purposes):
import hashlib
workdir = '/tmp'
iso_image = 'image.iso'
def check_sha256(block_size=65536):
sha256 = hashlib.sha256()
with open(workdir + "/" + iso_name, 'rb') as f:
for block in iter(lambda: f.read(block_size), b''):
sha256.update(block)
computed_sum = print(sha256.hexdigest())
sha256sum
but I'm stuck as to how I should go about picking up the correct line from the "SHA256" file and then compare the hash (I guess I can do it with "if variable in" or something.
The following find command works on the Korn Shell command line:
find . \( ! -name . -prune \) -type f -name "*.txt" -mtime +100
In the particular directory I'm in, the above find will list correctly the three text files that exist that haven't been modified in over 100 days:
... (3 Replies)
Hi all,
Iam trying to sort the contents of the file based on the position of the file.
Example:
$cat sample.txt
0101020060731 ## Header record
1c1 Berger Awc ANP20070201301 4000.50
1c2 Bose W G ANP20070201609 6000.70
1c2 Andy CK ANP20070201230 28000.00... (3 Replies)
Hi Guru's,
I need to create 3 files with the contents "ABC" using single command.
Iam using:
echo "ABC" > file1.txt file2.txt file3.txt
the above command is not working. pls help me...
With Regards / Ganapati (4 Replies)
Hi,
I don't know hot to make this command work:
ls -laR | grep "^-" | awk '{print $9}'| grep "$.txt"
It should return the list of file .txt
It's important to search .txt at the end of the line, becouse some file name have "txt" in their name but have other extensions (13 Replies)
I have many Gaussian output files, which contain a string start from "HF=" but follws the different values. I'm trying to get this exact string from these txt files.
example 1,
2.524075,-0.563322,-1.285286\H,0,-2.544438,-0.678834,1.199166\H,0,2.18
... (7 Replies)
I have a file that I ran the dos2unix utility on, it cleans up pretty well, but I noticed an occasional ^M leftover, (actual characters) these may or may not be strays from my original dos file. Either way, I want to get rid of the ^ and any character that may follow. ^M ^C or whatever.
How do I... (6 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Create a Shell script that looks for all text files in your home directory (including subdirectories).
List... (3 Replies)
Hi all.
I have a .txt file that I need to sort it
My file is like:
1- 88 chain0 MASTER (FF-TE) FFFF 1962510 /TCK T FD2TQHVTT1 /jtagc/jtag_instreg/updateinstr_reg_1 dff1 (TI,SO)
2- ... (10 Replies)
Discussion started by: Behrouzx77
10 Replies
LEARN ABOUT DEBIAN
dh_pycentral
DH_PYCENTRAL(1) Debhelper DH_PYCENTRAL(1)NAME
dh_pycentral - use the python-central framework to handle Python modules and extensions
SYNOPSIS
dh_pycentral [debhelper options] [-n] [-Xitem] [-V version] [module dirs ...]
DESCRIPTION
dh_pycentral is a debhelper program that will scan your package, detect public Python modules and move them in /usr/share/pycentral so that
python-central can byte-compile those for all supported Python versions. Extensions are kept into the original installation location.
Moving the files to the pycentral location and adding symbolic links to /usr/lib/pythonX.Y/*-packages can be done by setting the
environment varibale DH_PYCENTRAL to a string containing the string include-links.
Moving the files to the pycentral location can be disabled by setting the environment varibale DH_PYCENTRAL to a string containing the
string nomove.
The functionality to shorten the time of unavailabilty of files during unpack and configure has been removed (symlinking files in the
preinst and not removing the symlinked files on upgrade) in version 0.6.9.
You must have filled the XS-Python-Version header to indicate the set of python versions that are going to be supported. dh_pycentral
expects the XB-Python-Version for each binary package it is supposed to work on.
dh_pycentral will also generate substitution variables: the ${python:Provides} variable will contain versioned provides of the package (if
the package's name starts with "python-"). A python-foo package could provide "python2.3-foo" and "python2.4-foo" at the same time. Python
extensions have to provide those whereas it's only option for pure python modules.
The ${python:Versions} variable should be used to provide the required XB-Python-Version field listing the python versions supported by the
package.
OPTIONS
module dirs
If your package installs python modules in non-standard directories, you can make dh_pycentral check those directories by passing their
names on the command line. By default, it will check /usr/lib/$PACKAGE, /usr/share/$PACKAGE, /usr/lib/games/$PACKAGE,
/usr/share/games/$PACKAGE, /usr/lib/python?.?/site-packages and /usr/lib/python?.?/dist-packages.
Note: only /usr/lib/python?.?/site-packages and the extra names on the command line are searched for binary (.so) modules.
-V version
If the .py files your package ships are meant to be used by a specific pythonX.Y version, you can use this option to specify the
desired version, such as 2.3. Do not use if you ship modules in /usr/lib/site-python.
With the new policy, this option is mostly deprecated. Use the XS-Python-Field to indicate that you're using a specific python version.
-n, --noscripts
Do not modify postinst/postrm scripts.
-Xitem, --exclude=item
Exclude files that contain "item" anywhere in their filename from being taken into account to generate the python dependency. You may
use this option multiple times to build up a list of things to exclude.
CONFORMS TO
Python policy, version 0.4.1 (2006-06-20)
SEE ALSO debhelper(7)
This program is a part of python-central but is made to work with debhelper.
AUTHORS
Raphael Hertzog <hertzog@debian.org>
Also includes bits of the old dh_python written by Josselin Mouette <joss@debian.org> who used many ideas from Brendan O'Dea
<bod@debian.org>.
2011-04-14 DH_PYCENTRAL(1)
08-20-2019
