Convert Bash history to Zsh history

bash-to-zsh-hist.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# 
# This is how I used it:
# $ cat ~/.bash_history | python bash-to-zsh-hist.py >> ~/.zsh_history

import sys
import time


def main():
    timestamp = None
    for line in sys.stdin.readlines():
        line = line.rstrip('\n')
        if line.startswith('#') and timestamp is None:
            t = line[1:]
            if t.isdigit():
                timestamp = t
                continue
        else:
            sys.stdout.write(': %s:0;%s\n' % (timestamp or time.time(), line))
            timestamp = None


if __name__ == '__main__':
    main()

Worked well for me on Ubuntu 16.04. Thanks.

Like a charm on Ubuntu 17.10 too!

worked on Ubuntu 14.04, Thanks.

Worked like a charm on Mac

Just an update that this one works really well :)
Ubuntu 18.10

works on ubuntu 19.04 python 2.7.16
GNU bash, version 5.0.3(1)-release (x86_64-pc-linux-gnu)
zsh 5.5.1 (x86_64-ubuntu-linux-gnu)
thanks!!

Works for me on Ubutnu 18.04!

Debian Buster, works good.

Worked like a charm (Ubuntu 18.04). Thanks!

OSX Catalina, works fine! =D
Python 2.7.16

Nice!! Worked beautifully!

Thanks !!!! worked on WSL - python3.8

You're awesome @muendelezaji. Thanks for this. Worked so well.

Works!!

awesome!

Great, thanks :)

Armbian 21.02.3 Focal (Orange Pi) worked! Thanks!

works well on ubuntu 20.04

🙏

Works fine on Manjaro! Thanks!

THANK YOU FOR THIS!!!

Working on Debian 11 (stock) python, either run the script as:

cd ~/ && cp .bash_history .bash_history.bak && cat ~/.bash_history | python3 bash-to-zsh-hist.py >> ~/.zsh_history

Or, symlink python3 > python:

sudo ln -s /usr/bin/python3.9 /usr/bin/python
cat ~/.bash_history | python bash-to-zsh-hist.py >> ~/.zsh_history

nice, worked like a charm on my new MacBook Pro. 👍 thank you

Perfect. Thanks!

thanks, worked on a new M1 MBP

Thanks, worked on Catalina with python 2.7.16

To get it to work with hstr, I had to use int(time.time())
Thanks for saving my history!!

On WSL had pretty big history and was using HSTR, so after importing the history had 2 problems:

1. Error zsh: corrupt history file /home/user/.zsh_history
2. HSTR showing timestamps
   So the solution for me was modified script with thanks to @Zackhardtoname and then several additional steps:
3. Write date to some other file .zsh_history_tmp
4. strings .zsh_history_tmp > .zsh_history
5. fc -R .zsh_history