Learned something new.

1 files changed, 74 insertions, 6 deletions

diff --git a/docs/serverdocs/ScrapBook.md b/docs/serverdocs/ScrapBook.md
index 27849a2..edecc1a 100644
--- a/docs/serverdocs/ScrapBook.md
+++ b/docs/serverdocs/ScrapBook.md
@@ -1,18 +1,86 @@
 <!-- MigrateUsers, Version: 1, Modified: 2018/12/02, Author: trac -->

 # Scrapbook

-### Migrate Users UID/GID

-YOU ARE HERE (Consolidate this into a scraps)

-```

+

+## Migrate Users UID/GID

+

+```sh

 chown --from=1000:1000 999:999 /. -Rv

 ```

 

-### clone drives and change uuids

+## clone drives and change uuids

 

-```

+```sh

 screen dd if=/dev/sda of=/dev/sdj bs=1M status=progress

 apt install uuid-runtime

 printf '%s\n' p x i $(uuidgen) r w | sudo fdisk /dev/sdj

 e2fsck -f /dev/sdj2

 tune2fs -U $(uuidgen) /dev/sdj2

 blkid

-```
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+```

+

+## Clean big files out of your git history

+

+```sh

+remote: error: Trace: 28fd3d0788632c40d1e72ba92fd845cec66f07e5260e2d9d7e4d0456566214f2

+remote: error: See https://gh.io/lfs for more information.

+remote: error: File docs/Travel/images/PortAngelesVictoria17oct25/lassothepier.mov is 104.56 MB; this exceeds GitHubs file size limit of 100.00 MB

+remote: error: GH001: Large files detected. You may want to try Git Large File Storage - https://git-lfs.github.com.

+To github.com:feurig/3dangst.git

+ ! [remote rejected] main -> main (pre-receive hook declined)

+error: failed to push some refs to 'github.com:feurig/3dangst.git'

+```

+

+OH NO! And even if you remove it its still in your 'history'

+

+```sh

+feurig@MacBookPro PortAngelesVictoria17oct25 % git log --graph --full-history --all --pretty=format:"%h%x09%d%x20%s"

+* 4035fc1        (HEAD -> main) shrink the mov

+* d1a122c        Rough Draft Current Trip

+* 540a25e        (origin/main, origin/HEAD) burgers

+* b9685ff        clean up after fucking git.

+*   b27e176      Merge branch 'main' of github.com:feurig/3dangst fuck you git

+|\

+* 4035fc1        (HEAD -> main) shrink the mov

+* d1a122c        Rough Draft Current Trip

+...

+```

+

+The magic below works if you leave the file where it is otherwise it will fail because you have unstaged changes.

+

+```sh

+feurig@MacBookPro 3dangst % git filter-branch --tree-filter 'rm -f docs/Travel/images/PortAngelesVictoria17oct25/lassothepier.mov' HEAD

+WARNING: git-filter-branch has a glut of gotchas generating mangled history

+	 rewrites.  Hit Ctrl-C before proceeding to abort, then use an

+	 alternative filtering tool such as 'git filter-repo'

+	 (https://github.com/newren/git-filter-repo/) instead.  See the

+	 filter-branch manual page for more details; to squelch this warning,

+	 set FILTER_BRANCH_SQUELCH_WARNING=1.

+Proceeding with filter-branch...

+

+Rewrite 4035fc149ca4c01c080a0ddc7ba14063d0ae846d (27/45) (1 seconds passed, remaining 0 predicted)

+Ref 'refs/heads/main' was rewritten

+feurig@MacBookPro 3dangst % git log --graph --full-history --all --pretty=format:"%h%x09%d%x20%s"

+* 3c2354c        (HEAD -> main) shrink the mov

+* fe6ab88        Rough Draft Current Trip

+...

+* 7631e0f        morestuff

+```

+

+Now you can push it.

+

+```sh

+feurig@MacBookPro 3dangst % git push

+Enumerating objects: 22, done.

+Counting objects: 100% (22/22), done.

+Delta compression using up to 10 threads

+Compressing objects: 100% (18/18), done.

+Writing objects: 100% (18/18), 16.30 MiB | 1.28 MiB/s, done.

+Total 18 (delta 4), reused 0 (delta 0), pack-reused 0

+remote: Resolving deltas: 100% (4/4), completed with 3 local objects.

+To github.com:feurig/3dangst.git

+   540a25e..3c2354c  main -> main

+```

+

+* <https://www.geeksforgeeks.org/git/how-to-remove-a-large-file-from-commit-history-in-git/>

+* <https://stackoverflow.com/questions/2100907/how-can-i-remove-delete-a-large-file-from-the-commit-history-in-the-git-reposito>

+* <https://www.baeldung.com/ops/git-remove-file-commit-history>
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