#!/bin/sh

 #

 # An example hook script to check the commit log message.

 # Called by git-commit with one argument, the name of the file

 # that has the commit message.  The hook should exit with non-zero

 # status after issuing an appropriate message if it wants to stop the

 # commit.  The hook is allowed to edit the commit message file.

 #

 # To enable this hook, rename this file to "commit-msg".

 

 # Uncomment the below to add a Signed-off-by line to the message.

 # Doing this in a hook is a bad idea in general, but the prepare-commit-msg

 # hook is more suited to it.

 #

 # SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')

 # grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"

 

 # This example catches duplicate Signed-off-by lines.

 

 test "" = "$(grep '^Signed-off-by: ' "$1" |

 	 sort | uniq -c | sed -e '/^[ 	]*1[ 	]/d')" || {

 	echo >&2 Duplicate Signed-off-by lines.

 	exit 1

 }