# checking action of git-pull

2 messages from 2008-12-07 to 2008-12-07. Participants: Mark Ryden, Junio C Hamano.
Thread: https://gitlist.dev/t/16622

## Mark Ryden, 2008-12-07 08:23

Subject: checking action of git-pull
Message-ID: <dac45060812070023h7f6a6c86ve2e4ba9f1773f03f@mail.gmail.com>
URL: https://gitlist.dev/e/dac45060812070023h7f6a6c86ve2e4ba9f1773f03f%40mail.gmail.com

```
Hello,
  I am working against a git repository which is updated at non regular
intervals; sometimes it takes a day and sometimes a week or two.

I have a script in crontab which runs daily which tries "git pull" of
this repository.

I want write a bash script which echoes yhe  result of this git pull
to a log file in such
a way that in case that any files were pulled, a short message
saying "files were pulled at date ddmmyyyy" will be added to a log file.
In case that there there were no changes, a message saying
"Already up-to-date (ddmmyyyy) will be added to a log file.

How can it be done ?
can I test somehow the return value of git pull in a bash script for
these two different
cases?

Regards,
Mark

```

## Junio C Hamano, 2008-12-07 10:51

Subject: Re: checking action of git-pull
Message-ID: <7vprk4cl7i.fsf@gitster.siamese.dyndns.org>
URL: https://gitlist.dev/e/7vprk4cl7i.fsf%40gitster.siamese.dyndns.org
In-Reply-To: <dac45060812070023h7f6a6c86ve2e4ba9f1773f03f@mail.gmail.com>

```
"Mark Ryden" <markryde@gmail.com> writes:

> Hello,
>   I am working against a git repository which is updated at non regular
> intervals; sometimes it takes a day and sometimes a week or two.
>
> I have a script in crontab which runs daily which tries "git pull" of
> this repository.
>
> I want write a bash script which echoes yhe  result of this git pull
> to a log file in such
> a way that in case that any files were pulled, a short message
> saying "files were pulled at date ddmmyyyy" will be added to a log file.
> In case that there there were no changes, a message saying
> "Already up-to-date (ddmmyyyy) will be added to a log file.
>
> How can it be done ?
> can I test somehow the return value of git pull in a bash script for
> these two different
> cases?

You know that a no-op pull does not update HEAD and a successful pull
does.  So your script would do something like:

	#!/bin/sh

        original_head=$(git rev-parse HEAD) || exit
        git pull origin || exit
        updated_head=$(git rev-parse HEAD) || exit
        if test "$updated_head" = "$original_head"
        then
        	echo Upstream is idling
	else
        	echo These new commits were brought in
                git shortlog $original_head..$updated_head
	fi

```