simple bash variable command

itz2000 · 06-18-2006, 04:53 AM

Hello, I would like to enter 3 directories named CD1 CD2 and CD3 and I would like to get into each directory, preform this './../../../rar/rar e *.rar && rm -rf *.r* && cd ..'
in each directory.

I was doing something like this (got via ls -t the 3 directories I want)
but it's not working correctly
for i in 'ls -t | tail -4 | head -3' do 'cd $i && ./../../../rar/rar e *.rar && rm -rf *.r* && cd ..'
So help me fix the above command please!

there are 2 options to get this in loop one is this ls -t which I used here, but in case it's not by the same date and I want to do something like this for i=1 to 3 do cd CD$i

possible?

Thanks

homey · 06-18-2006, 06:29 AM

Quote:

I want to do something like this for i=1 to 3 do cd CD$i

Maybe using sequence would work...

Code:

for i in $(seq -w 1 3) ; do
cd CD$i
# do something here
ls
# go back to the main folder
cd ..
done

itz2000 · 06-18-2006, 08:02 AM

Quote:

Originally Posted by homey

Maybe using sequence would work...

Code:

for i in $(seq -w 1 3) ; do
cd CD$i
# do something here
ls
# go back to the main folder
cd ..
done

Thanks,
here's the final command :

Code:

for i in $(seq -w 1 3) ; do cd CD$i; ./../../../rar/rar e *.rar; mv *.avi ../; rm -rf *.r*;  cd ..; done

THANKS!

homey · 06-18-2006, 08:09 AM

You're welcome!

itz2000 · 06-19-2006, 01:10 PM

Thanks!

I'd like to know where can I get a tutorial of these usuful things that will help me during my daily terminal usage?

things like

Code:

./program > file.txt
program &
for i in $(seq -w 1 3); do blabla; done
program1 && program2

homey · 06-19-2006, 01:45 PM

There are lots of goodies at http://www.tldp.org/LDP/abs/html/

I cruise up and down the linux forums like this one and google alot when looking for a particular idea.

itz2000 · 06-19-2006, 08:24 PM

Quote:

Originally Posted by homey

There are lots of goodies at http://www.tldp.org/LDP/abs/html/

I cruise up and down the linux forums like this one and google alot when looking for a particular idea.

The problem is when I got no ideas on how to improve on my daily shell usage
but thanks for the link, from a firs 10 minutes review it look usful !