General Tips/Tricks for Software configuration I find useful

Here I will add a list of tips and tricks that I have come across;

Changing default shell on lxplus

I recommend everyone RUN BASH, it's just more supported and isn't there for 'backwards compatability'

goto: https://cra.cern.ch/ login click on 'My Details' box under user info (left frame) find dropdown box next to shell and change that to bash hit the update button (bottom left) now when you login to lxplus your done

Fix Bash history on lxplus

Save this code as a script_name.sh and chmod +x script_name.sh and then run ./script_name.sh on an lxplus login.

Next time you login all the previous commands are easy to find

To search for that command or program option you can't quite remember:

cat ~/.bash_history | grep some-string

where some-string is what you want o pull out of your history.

#!/bin/bash
mkdir -p ~/backup-hist
cat .hist* >> .~/.bash_history
mv .hist* >> ~/backup-hist
for i in `seq 1 9`; do
        ln -sf ~/.bash_history "~/.history.lxplus00$i.cern.ch";
done
for i in `seq 10 99`; do
        ln -sf ~/.bash_history "~/.history.lxplus0$i.cern.ch";
done
for i in `seq 100 999`; do
        ln -sf ~/.bash_history "~/.history.lxplus$i.cern.ch";
done

-- RobCurrie - 05-Nov-2010