Python: Get Output of the Shell Command 'History'

Python: get output of the shell command 'history'

why don't you read the file directly.
~/.bash_history

for history in open('/home/user/.bash_history'):
    print(history, end='')

How do you see the entire command history in interactive Python?

Use readline.get_current_history_length() to get the length, and readline.get_history_item() to view each.

How to add a command to the bash history from python

There is no cross-shell, universally portable option: History is an interactive facility without a close POSIX specification as to how it's implemented.

That said, there are some fixes needed to make the general approach attempted above both functional and safe:

subprocess.Popen(['bash', '-ic', 'set -o history; history -s "$1"', '_', command_string])

• The HISTFILE variable is only set in interactive shells. Thus, you need to run bash with -i to have it set at all.
• set -o history is similarly needed to turn history on.
• Passing command_string out-of-band instead of substituting it into the argument following -c avoids massive security bugs (where trying to append a line to history could execute parts of it instead).

How can I access command prompt history with Python

You don't need Python at all, use doskey facilities for that, i.e.:

doskey /history

will print out the current session's command history, you can then redirect that to a file if you want to save it:

doskey /history > saved_commands.txt

If you really want to do it from within Python, you can use subprocess.check_output() to capture the command history and then save it to a file:

import subprocess

cmd_history = subprocess.check_output(["doskey", "/history"])
with open("saved_commands.txt", "wb") as f:
    f.write(cmd_history)

How to get the terminal full history

What you want to do, is log the output of stdout, see this answer:

Making Python loggers output all messages to stdout in addition to log file

Invoking history command on terminal via Python script

Use this:

from subprocess import Popen, PIPE, STDOUT

e = Popen("bash -i -c  'history -r;history' ", shell=True, stdin=PIPE, stdout=PIPE, stderr=STDOUT)
output = e.communicate()

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