Macでgitリポジトリを毎晩寝てる間に同期する方法 ref: http://qiita.com/muo_jp/items/de57c590942e4ef49c9f

jp.muo.gitupdater.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd" >
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>jp.muo.gitupdater</string>
    <key>EnableGlobbing</key>
    <true/>
    <key>ProgramArguments</key>
    <array>
        <string>~/bin/update-git-repos.sh</string>
    </array>

    <key>StartCalendarInterval</key>
    <dict>
        <key>Hour</key>
        <integer>1</integer>
        <key>Minute</key>
        <integer>30</integer>
    </dict>
</dict>
</plist>

update-git-repos.sh

#!/bin/bash
REPO_DIR=~/Documents/workspace
REPOS=(mono PlaygroundOSS) # ここに定期更新したいリポジトリの一覧を書く
GIT_OPTS="fetch -a --prune origin"
RETRY_INT=60
LOG_FILE=~/.update_git.log

function fetch_git_reops {
    for r in "${REPOS[@]}"
    do
        echo "fetching... ${r}"
        cd $REPO_DIR/$r
        git $GIT_OPTS
    done
}

if [ ! -t 1 ]; then
    exec 1>> $LOG_FILE 2>&1
fi
echo "Starting git repos update at `date`"
# check network connectivity
i=0
while :
do
    i=$((i + 1))
    QRES=`dig +time=5 +tries=1 +short github.com` ; QRET=$?
    if [ $QRET -eq 0 -a -n "$QRES" ]; then
        fetch_git_reops
        exit 0
    fi
    if [ $i -eq 5 ]; then
        echo "No network access. Giving up."
        exit 9
    fi
    echo "No network access. Retrying in $RETRY_INT seconds."
    sleep $RETRY_INT
done