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@amalmurali47
amalmurali47 / edit_commit_history.md
Last active July 24, 2024 19:47
Change ownership of selected older commits in Git
  1. Clone the repo.
  2. Use git rebase -i --root
  3. vim will open. Select the commits you want to modify by changing pick to edit. If you would like to change all the commits, perform the following replace: :%s/^pick/edit/g. This command changes all instances of "pick" at the start of lines to "edit".
  4. You will now be shown all the selected commits one by one. Each commit message will be displayed. You have two options:
    • If you would like to keep the commit author details the same, do a git rebase --continue.
    • If you would like to change it to a different name/email, do git commit --amend --reset-author. If --reset-author is specified, it will use the details from your git config. (If you need to specify an alternate name/email, you can do so with --author="John Doe <john@example.com>". If you would like to change the time to a previous date, you can do so with --date "2 days ago".)
  5. Do the same for all the commits and finish the rebase.
  6. Perform git push -f origin master to
@jamesktan
jamesktan / Shell Commands ePub
Last active April 18, 2024 12:28
Unzipping & Zipping ePub from Command Line
// To unzip the epub, move the ePub to a folder, cd to it then simply:
unzip MyEbook.epub
// To zip up an epub:
1. zip -X MyNewEbook.epub mimetype
2. zip -rg MyNewEbook.epub META-INF -x \*.DS_Store
3. zip -rg MyNewEbook.epub OEBPS -x \*.DS_Store
Some explanations necessary here. We start each line with two flags:
@nhibberd
nhibberd / gist:9d78576aab943cdb0f6c
Created June 23, 2014 00:41
Zsh case insensitivity auto complete
## case-insensitive (uppercase from lowercase) completion
zstyle ':completion:*' matcher-list 'm:{a-z}={A-Z}'
## case-insensitive (all) completion
#zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}'
## case-insensitive,partial-word and then substring completion
#zstyle ':completion:*' matcher-list 'm:{a-z}={A-Z}' 'r:|[._-]=* r:|=*' 'l:|=* r:|=*'
@guifromrio
guifromrio / compress-pdf-with-gs.md
Created August 30, 2013 14:39
Compress PDF files with ghostscript

This can reduce files to ~15% of their size (2.3M to 345K, in one case) with no obvious degradation of quality.

ghostscript -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf

Other options for PDFSETTINGS:

  • /screen selects low-resolution output similar to the Acrobat Distiller "Screen Optimized" setting.
  • /ebook selects medium-resolution output similar to the Acrobat Distiller "eBook" setting.
  • /printer selects output similar to the Acrobat Distiller "Print Optimized" setting.
  • /prepress selects output similar to Acrobat Distiller "Prepress Optimized" setting.