Saturday, February 26, 2011

Case sensitive stuff and figures in latex

I had some troubles to link the latex sources done in windows (case insensitive) to compile on linux (case sensitive). In order to fastly solve this problem, first, I run in shell (simply copy/paste in terminal) following code to make all figure files lowercase. This code works only for current directory.

for f in *; do
g=`expr "xxx$f" : 'xxx\(.*\)' | tr '[A-Z]' '[a-z]'`
mv "$f" "$g"
done

However, I found a bit difficult part to rename all the figure links within latex to lowercase. At least not without coding. I didnt have time to check the possibility to edit the code above to so it could be used also within files, but when I come up to this issue again, I might reedit this post.

Thursday, February 10, 2011

X forwarding: Took me long for this discovery :)

VNC works usually pretty well to control PCs remotely. However, sometimes you only want to run just one program from the remote PC (or 64-core server), like matlab.
Better option than VNC is definitely X forwarding.

ssh -l username -X -v servername

Once you login, simply just run the command for your program, and it will be open like a regular program :)

More details on:
http://www.vanemery.com/Linux/XoverSSH/X-over-SSH2.html

There is also a possibility to do the same in windows using putty and Xwin32:
http://www.math.umn.edu/systems_guide/putty_xwin32.html

edit: In order to enable the X forwarding on your own machine, do the following (ubuntu 11.10)

1) Install openssh-server
“sudo apt-get install openssh-server”

2) Edit the file /etc/ssh/ssh_config. Find/uncomment/modify these lines:
ForwardAgent yes
ForwardX11 yes
ForwardX11Trusted yes

3) Edit /etc/ssh/sshd_config. Find/uncomment/modify these lines:
X11Forwarding yes

4) Restart your SSH server.
Earlier, you were playing with init.d, now in Ubuntu it is advised to use this instead:
"sudo service ssd restart"

source: http://www.craigryder.com/linux-ubuntudebetc/x11-forwarding-and-ssh-for-remote-linux-ubuntu-desktop/