Brain Dump

Git AutoPush

jawalters — Wed, 07 Dec 2011 16:30:25 +0000

Generally this is a bad idea but I have several repos that are used only by me and I tend to forget to push my changes once I make them..I’m lazy and don’t want to have to worry about it…Enter GIT’s post-commit hook. After every successful commit I want my changes to push. Simply add the following to the .git/hooks/post-commit file and make it +x

git push

Simple right? Now when I commit something it gets pushed and I don’t have to worry about those pesky extra key strokes.

space hog?

jawalters — Tue, 21 Jun 2011 21:25:03 +0000

find /var/www/ -type f -size +10000k -exec ls -lh {} \; | awk ‘{ print $9 “\t” $5 }’

starting services with func

jawalters — Wed, 20 Oct 2010 14:43:48 +0000

func ${HOSTNAME} call command run “service sshd start”

Cobbler

jawalters — Thu, 12 Aug 2010 17:49:25 +0000

Wildcard search
cobbler system find --name="foo*"

More mySQL

jawalters — Thu, 03 Jun 2010 21:04:49 +0000

Master/Master info
show master status;
show slave status\G;

VI Tricks

jawalters — Fri, 23 Apr 2010 13:40:00 +0000

Replacing words in all lines of a file

:%s/word/word replace/g :1,$s/word/word replace/g

Committing a GIT patch for someone else

jawalters — Fri, 26 Mar 2010 14:29:13 +0000

Not everyone is allowed to commit changes to GIT here. They have to create patches and then have that patch reviewed and committed on their behalf..

To create a patch make sure your changes are committed to your local tree. Then run

git format-patch -1 --stdout > patch-for-inc948321.patch

Now to check if that patch will apply cleanly to our repo

git apply --check /path/to/patch/file.patch

If you get no output from that then the patch will apply cleanly. Now to apply the patch for real.

git am --signoff < /path/to/patch/file.patch Applying: Patch to create ponies for all users


Notice I used git am instead of git apply. The reason for this is that little --signoff tag. That will so the patch author and who committed it as well as the signoff.
Now push that out and done.


git push



Cherry Picking With GIT
jawalters — Fri, 12 Mar 2010 19:29:37 +0000
Needed to pull a commit from qa over to prod without merging so I just cherry picked it out to prod. 
First get the commit hash from the qa branch.. You can do this by going into the qa branch using git checkout or by using a web interface such as cgit. Once you have the hash and are in the master branch run


git cherry-pick 4a1d2a7

Finished one cherry-pick.

1 file changed, 1 insertions(+), 2 deletions(-)


Now just to push the change upstream


git push


And done.

Then I pushed m 

         


Getting SAN Host List From A Netapp
jawalters — Thu, 21 Jan 2010 18:33:46 +0000
Needed to find a list of all hosts that were attached to our netapps. I used igroup show to get that info..Since I needed it for a lot of filers I added the filer names to a text file and ran a for loop over it:


for i in `cat list.txt`; do ssh root@$i igroup show | sed -e '/^$/d' -e '/^21.*/d' >> list2.txt; done


The output came out something like this: (note: wwpn have been changed)


superhost.domain.com (FCP) (ostype: linux):

        21:00:00:11:21:04:6a:20 (logged in on: vtic, 0a)

        21:01:00:11:21:26:6a:20 (logged in on: vtic, 0d)


Since all I needed was the actually hostname I used sed to get rid of all the wwpn using -e 's/^21.*//'. But before that worked I had to get rid of all the leading whitespace by using -e 's/^[ /t]*//'

         


I Hate Software Raid
jawalters — Fri, 18 Dec 2009 20:27:07 +0000
Removing failed partition and adding it back in:



#mdadm /dev/md1 --remove /dev/sda3

mdadm: hot removed /dev/sda3

#mdadm /dev/md1 --manage --add /dev/md1 /dev/sda3

mdadm: hot added /dev/sda3