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:
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):
So far, I'm down to this python script:
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 OPENSOLARIS
sha256sum
SHA256SUM(1) User Commands SHA256SUM(1)NAME
sha256sum - compute and check SHA256 message digest
SYNOPSIS
sha256sum [OPTION] [FILE]...
DESCRIPTION
Print or check SHA256 (256-bit) checksums. With no FILE, or when FILE is -, read standard input.
-b, --binary
read in binary mode
-c, --check
read SHA256 sums from the FILEs and check them
-t, --text
read in text mode (default)
The following two options are useful only when verifying checksums:
--status
don't output anything, status code shows success
-w, --warn
warn about improperly formatted checksum lines
--help display this help and exit
--version
output version information and exit
The sums are computed as described in FIPS-180-2. When checking, the input should be a former output of this program. The default mode is
to print a line with checksum, a character indicating type (`*' for binary, ` ' for text), and name for each FILE.
AUTHOR
Written by Ulrich Drepper, Scott Miller, and David Madore.
REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.
COPYRIGHT
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms of the GNU General Public License
<http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for sha256sum is maintained as a Texinfo manual. If the info and sha256sum programs are properly installed at your
site, the command
info sha256sum
should give you access to the complete manual.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+--------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+--------------------+
|Availability | SUNWgnu-coreutils |
+--------------------+--------------------+
|Interface Stability | Uncommitted |
+--------------------+--------------------+
NOTES
Source for GNU coreutils is available on http://opensolaris.org.
sha256sum 6.7 December 2006 SHA256SUM(1)