Tar

tar cvf backup.tar /etc

Gzip

gzip -9 backup.tar

Tar and Gzip together

tar cvf - /etc gzip -9c > backup.tar.gz

To untar

tar xvf backup.tar

To ungzip

gunzip backup.tar.gz

To Untar and Ungzip

gunzip -c backup.tar.gz  | tar xvf -

To list contents of a tar.gz file

tar -ztvf file.tar.gz

To list contents of a zip file

unzip -l [filename].zip

First, it might be good for you to get the total amount of free memory on your system (using -m will present the information in MB):

[root@www1 bin]# free -m
total       used       free     shared    buffers     cached
Mem:          1770       1754         15          0         74        894
-/+ buffers/cache:        785        984
Swap:         1983         74       1909

Looks like I have about 1754 MB free.

Edit the following file:

/opt/jrun4/bin/jvm.config

then change the following line from:

-XX:MaxPermSize=512m

to something higher, like:

-XX:MaxPermSize=768m

I really like the Ubuntu operating system and the team that is making it. I hope to make it my personal development computer once I find a nice laptop to run it on.

Installing Ubunto 9.10 on VMWare

Full Screen Terminal Screen shot in Ubuntu while installing Ruby on Rails