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 LINUX
dh_python
DH_PYTHON(1) Debhelper DH_PYTHON(1)NAME
dh_python - calculates Python dependencies and adds postinst and prerm Python scripts (deprecated)
SYNOPSIS
dh_python [debhelperoptions] [-n] [-V version] [moduledirs...]
DESCRIPTION
Note: This program is deprecated. You should use dh_pysupport or dh_pycentral instead. This program will do nothing if debian/pycompat or a
Python-Version control file field exists.
dh_python is a debhelper program that is responsible for generating the ${python:Depends} substitutions and adding them to substvars files.
It will also add a postinst and a prerm script if required.
The program will look at Python scripts and modules in your package, and will use this information to generate a dependency on python, with
the current major version, or on pythonX.Y if your scripts or modules need a specific python version. The dependency will be substituted
into your package's control file wherever you place the token ${python:Depends}.
If some modules need to be byte-compiled at install time, appropriate postinst and prerm scripts will be generated. If already byte-
compiled modules are found, they are removed.
If you use this program, your package should build-depend on python.
OPTIONS
module dirs
If your package installs Python modules in non-standard directories, you can make dh_python check those directories by passing their
names on the command line. By default, it will check /usr/lib/site-python, /usr/lib/$PACKAGE, /usr/share/$PACKAGE,
/usr/lib/games/$PACKAGE, /usr/share/games/$PACKAGE and /usr/lib/python?.?/site-packages.
Note: only /usr/lib/site-python, /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.
-n, --noscripts
Do not modify postinst/prerm scripts.
CONFORMS TO
Debian policy, version 3.5.7
Python policy, version 0.3.7
SEE ALSO debhelper(7)
This program is a part of debhelper.
AUTHOR
Josselin Mouette <joss@debian.org>
most ideas stolen from Brendan O'Dea <bod@debian.org>
8.9.0ubuntu2.1 2012-06-12 DH_PYTHON(1)
08-20-2019
