Casper extension attribute that collects the version of Git installed.

git_version.sh

#!/bin/sh

###
#
#            Name:  git_version.sh
#     Description:  Casper extension attribute that displays the version of Git.
#                   Excludes /usr/bin/git in order to prevent Xcode install prompt.
#          Author:  Elliot Jordan <elliot@elliotjordan.com>
#         Created:  2014-12-19
#   Last Modified:  2014-12-22
#         Version:  1.1.1
#
###

CURRENT_USER=$(/usr/bin/stat -f%Su /dev/console)
CURRENT_PATH=$(/usr/bin/su "$CURRENT_USER" -c "/usr/bin/env | /usr/bin/grep PATH= | /usr/bin/colrm 1 5 | sed 's/\/usr\/bin://g'")
RESULT=""

old=$IFS
IFS=:

for p in $CURRENT_PATH; do
    GIT_VERSION="$($p/git --version 2> /dev/null)"
    if [[ $? == 0 ]]; then
        RESULT+="$p $GIT_VERSION\n"
    fi
done

IFS=$old

/usr/bin/printf "<result>$RESULT</result>\n"

exit 0