Script to replace full shas with shorter versions (arbitrary length)

sha-changer.sh

#!/bin/bash

git log --format=">%H< %cN" -10 | while read line 
do
    pre=`echo $line|sed -e "s/\(.*\)>[^<]*<.*/\1/"`
    sha=`echo $line|sed -e "s/.*>\([0-9a-fA-F]*\)<.*/\1/"`
    #echo "Cut sha as: $sha"
    sha=`git rev-parse --short=4 $sha`
    rest=`echo $line|sed -e "s/.*>[^<]*<\(.*\)/\1/"`
    echo "$pre -- $sha -- $rest"
done