Welcome to Manikandan.me
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Hi this is my personal cheatsheet.
Git cheatsheet
Seeing commit between two dates:
git rev-list --count --since="Apr 15 2020"  --before="May 4 2020" --all
Seeeing commint on user basic and dates:
git shortlog -sne --since="01 Jan 2020" --before="01 Aug 2020" #for present branch
git shortlog -sne --since="01 Jan 2020" --before="01 Aug 2020" --all #for all branch
To remove a submodule you need to:
git submodule deinit <path_to_submodule>
git rm <path_to_submodule>
git commit-m "Removed submodule "
rm -rf .git/modules/<path_to_submodule>
Create SSH RSA key
ssh-keygen -m PEM -t rsa -b 4096
Delete backups after 7 days
find /var/opt/backups/ -type f -mtime +7 -name '*.tar' -delete