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@david-kariuki
Last active February 23, 2023 11:39
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This is an automated bash script to delete git branches older than some specific time period. The default set time is 3 months, but you can pass the period in months as a first parameter while running the shell script. The script will by default exclude master and main and development branch. You can add more
#!/bin/sh
:'
This is an automated bash script to delete git branches older than some specific time period.
The default set time is 3 months, but you can pass the period in months as a first parameter while running the shell script
'
declare -i numberOfMonths=3 # Declare the default period in months
declare blackListedBranches # Blacklisted branches
clear=clear # Command to clear terminal
ECHO='echo ' # Custom echo
${clear} # Clear terminal
# Check for passed period(In months) parameter
if [ -z "$1" ];
then
# Period not set
echo ""
echo "Period not set. Assuming delete period to the default $numberOfMonths months period!"
echo ""
sleep 2 # Hold for 2 seconds
else
# Period set
numberOfMonths=$1 # Set passed period
fi
echo "Deleting branches older than $numberOfMonths months!"
echo ""
sleep 1 # Hold for a second
# Set branches to exclude in deletion
blackListedBranches="main,master,development"
# Check for trailing commas to remove them
if [[ "$blackListedBranches" == *, ]];
then
declare trimmedValue=$(sed 's/.\{1\}$//' <<< "$blackListedBranches") # Remove last character
blackListedBranches="$trimmedValue" # Re-assign value
fi
# Start loop to search for commas
while true; do
# Check for commas in case of comma separated list to create a list for GREP
case "$blackListedBranches" in
*,*)
declare branchSeparator="$\|" # Declare separator syntax
blackListedBranches=${blackListedBranches/,/$branchSeparator} # Replace comma with GREP separator syntax
;;
*) # Default
break # Break loop
;;
esac
done
blackListedBranches="${blackListedBranches}$" # Append dollar sign at the end of GREP list
echo "The branches [ $blackListedBranches ] will not be deleted!"
sleep 2 # Hold for 2 seconds
echo "The branches below will be deleted!"
sleep 1 # Hold for 2 seconds
git branch -a | sed 's/^\s*//' | sed 's/^remotes\///' | grep -v $blackListedBranches
sleep 4 # Hold for 2 seconds
: '
Initiate loop scanning for branches older than passed time or set default while excluding the below branches
main, master
'
for target_branch in $(git branch -a | sed 's/^\s*//' | sed 's/^remotes\///' | grep -v $blackListedBranches);
do
# Check period
if ! ( [[ -f "$target_branch" ]] || [[ -d "$target_branch" ]] ) && [[ "$(git log $target_branch --since "$numberOfMonths month ago" | wc -l)" -eq 0 ]]; then
if [[ "$DRY_RUN" = "false" ]];
then
ECHO="" # Empty echo
fi
local_target_branch_name=$(echo "$target_branch" | sed 's/remotes\/origin\///') # Get target branch in iteration
local_target_branch_name=${local_target_branch_name/origin\//} # Replace string "origin/" with empty(string)
$ECHO Deleting Local Branch : "${local_target_branch_name}" # Print message
sleep 1 # Hold for a second
git branch -d "${local_target_branch_name}" # Delete local branch
$ECHO Deleting Remote Branch : "${local_target_branch_name}" # Print message
sleep 1 # Hold for a second
git push origin --delete "${local_target_branch_name}" # Delete remote branch
fi
done
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