generating ssh private key
ssh-keygen -t rsa
ssh-keygen -t rsa
svnadmin create svn.example.com
echo '#!/bin/sh' > svn.example.com/hooks/pre-revprop-change
chmod +x svn.example.com/hooks/pre-revprop-change
svnsync init file://$PWD/svn.example.com https://svn.example.com/
svnsync sync file://$PWD/svn.example.com
crontab -e*/5 * * * * /usr/bin/svnsync sync --non-interactive file:///opt/svn.example.com
svn proplist --revprop -r 0 file:///opt/svn.example.com/svn propdel svn:sync-lock --revprop -r 0 file:///opt/svn.example.com/
I finally got Google appengine running on my Dell mini9 and heres how ...
Download and upzip the appengine stk
unzip google_appengine_1.2.2.zip
appengine does not run on python 2.6 (the kubuntu default version) so install 2.5 from the commandline
sudo apt-get install python2.5
edit the first line of the dev_appserver.py file in the google_appengine sdk folder
#!/usr/bin/env python
to read
#!/usr/bin/env python2.5
Now that's out of the way we have to fix the permissions on the files in the SDK:
cd google_appengine
sudo chmod -R o+rx ./*
All done, enjoy
If your are compiling software from source under linux you may be able to obtain the required packages using apt-get, first locate the packaged software using apt-cache:
sudo apt-cache search [software]
then look for the appropriate package name and then use apt-get to install the required dev packages, libs etc:
sudo apt-get build-dep [package]
To mount a usb key on linux first create a folder as your mount target (do this only once!):
mkdir /media/sda
plug the usb key into the computer and execute the following as root
mount /dev/sda1 /media/sda
the drive will now be accessable in /mount/sda and before removing the device type:
umount /media/sda
before removing the key from the computer.
It is possible to recreate your ssh public key using the following:
ssh-keygen -y -f ./id_dsa > id_dsa.pub
Use this command to generate .md5 hash files for all of the libraries in your maven repository, on mac:
find -E . -regex ".*(\.jar|\.pom)$" -exec sh -c "/sbin/md5 -q '{}' > '{}.md5'" \;
on linux try this:
find . -regextype posix-extended -regex ".*(\.jar|\.pom)$" -exec sh -c "/usr/bin/md5sum '{}' > '{}.md5'" \;
mySQL access using ssh: Tunneling to an internal system using ssh: Tunneling to an internal IMAP server through ssh when away from the office: Notice that the command is issued as root, this is to allow the forwarding of a privileged port (993 if the connection is SSL encrypted or 143 if not). By forwarding the privileged port there is no need to change any of the settings in you email program since the /etc/hosts file overrides the DNS lookup of your mail server.
To delete all of the subversion (.svn), CVS (.cvs) or hidden MAC .DS_Store folders from a directory tree use one of the following commands from the console:
rm -rf `find . -type d -name .svn`
rm -rf `find . -type d -name .cvs`
rm -rf `find . -type d -name .DS_Store`
for files use:
rm `find . -name ‘*.tmp’`
First lets create a gzip compressed tar file of the directory to be backed up:
tar --create --gzip --absolute-names --preserve-permissions --file=/backups/etc-`date +"%b_%d_%Y"`.tar.gz /etc
this will create a file called etc-Apr_15_2007.tar.gz in your /backups folder. To create a 7 day rolling backup you can use the following:
tar --create --gzip --absolute-names --preserve-permissions --file=/backups/etc-`date +"%A"`.tar.gz /etc
this will create a backup file called etc-Sunday.tar.gz.
To schedule the backup with cron add the following to your crontab file (crontab -e):
0 1 * * * tar --create --gzip --absolute-names --preserve-permissions --file=/backups/etc-`date +"\%A"`.tar.gz /etc
This will run the backup at 1 am every day. Note the use of \% to escape the % symbol in the crontab file.
