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#Open git bash and run the following command
git branch --merged | egrep -v "(^\*|master|main|dev|develop)" | xargs git branch -d
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git branch --merged master | grep -v '^[ *]*master$' | xargs git branch -d
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# Add this to your alias in .bashrc or .zshrc
# then run git-removed-merged-branches
alias git-removed-merged-branches="git branch --merged | egrep -v '(^\*|master|dev)' | xargs git branch -d"