git: git branch name programmatically

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In a bash script, you can get the current branch's name programmatically thus:

#!/bin/bash

branch_name=$(git symbolic-ref -q HEAD)
echo $branch_name
branch_name=${branch_name##refs/heads/}
echo $branch_name
branch_name=${branch_name:-HEAD}
echo $branch_name

Beware, to find a branch name (whether checked out or not) according to a pattern:

#!/bin/bash

git checkout production.release.4.2
production_branch=`git branch | grep "production"`

# May not give the expected result:
# the character $ is being treated as a wildcard and will be expanded, so that the output may include all files in the directory:
echo $production_branch
# Using double quotes solve the problem:
echo "$production_branch"

Issues related to this page:

ProjectSummaryStatusPriorityCategoryLast updatedAssigned to
ProgrammingBash script: how does the $ wildcard work in gi…activenormalfeature request5 years 45 weeks