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  1. #!/bin/sh
  2. #
  3. # An example hook script to check the commit log message.
  4. # Called by "git commit" with one argument, the name of the file
  5. # that has the commit message. The hook should exit with non-zero
  6. # status after issuing an appropriate message if it wants to stop the
  7. # commit. The hook is allowed to edit the commit message file.
  8. #
  9. # To enable this hook, rename this file to "commit-msg".
  10. # Uncomment the below to add a Signed-off-by line to the message.
  11. # Doing this in a hook is a bad idea in general, but the prepare-commit-msg
  12. # hook is more suited to it.
  13. #
  14. # SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
  15. # grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"
  16. # This example catches duplicate Signed-off-by lines.
  17. test "" = "$(grep '^Signed-off-by: ' "$1" |
  18. sort | uniq -c | sed -e '/^[ ]*1[ ]/d')" || {
  19. echo >&2 Duplicate Signed-off-by lines.
  20. exit 1
  21. }