Some Cheats
Adding & removing based on my personal memory.
md cheats
2 equals: ==highlight==
- slash-space: list
{:.prompt-tip/info/warning/danger}
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4 spaces: code
Python venv
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# virtual env creation
py -m venv $env_name
# activation, check & deactivate
source $env_name/bin/activate
echo $VIRTUAL_ENV
deactivate
# print current packages
pip3 freeze > requirements.txt
git cheats
Remember to rename parent directory if duplicated.
rebase.false: traditional merge
rebase.true: concatenate dev commits after main
git-filter-repo
Recommend install via package manager
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# Analysis is also used in online repo cleanup
git-filter-repo --analyze
# Choose specific files and filter history
# Multiple paths should be specified separately
git-filter-repo --path <dir_or_file> --path <dir_or_file>
# Filter out specific files and filter history
git-filter-repo --path <dir_or_file> --invert-paths
git subtree
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# Under top-level repo directory
# --prefix= -P
# Suggest add subtree upstream
git remote add subtree_upstream subtree_upstream_url
# To split a dir into a subtree branch
git subtree split --prefix=subdir -b subtree_branch
# To add a subtree to this repo
git subtree add --prefix=subdir subtree_upstream subtree_branch
# To pull from/push to a subtree
# The working tree shall be very clean
git subtree pull/push --prefix=subdir subtree_upstream subtree_branch
ssh-keygen
ssh-keygen -t ed25519 -C "<comment>"
vim .ssh/id_ed25510.pub
Although ssh -T url is ususally useful in testing and adding unknwon hosts, this is not strictly equal to git clone requests in that ssh (possibly) will call out a virtual terminal.
scp cheats
upload /foo to /bar: scp /foo usr@ip:/bar
download: simply reverse
-r for directory, -P for port
tar cheats
Would recommend using shell plugins instead
create foo.tar from ./bar: tar -cf foo.tar ./bar
decompress: tar -xf foo.tar
-c for create, -x for decompress, -t for view contents
-v for verbose, -f for file(always the last one)
-g for gzip2