Batch processing? 2

[LovecraftHP]

Hi guys! I'm new to Linux so excuse me if the answer to this should turn out to be too obvious. I am working with numbered files eg train1.txt, train2.txt etc. Is there a way to execute a command on these files and make the number variable? What I mean is something like:

for (x=1;x<=10;x++) do program trainx.txt

I have experimented a bit with the Linux for do command but haven't had any success so far. If anyone could please help me out? Thanks.

 

[pcunix]

Sure

for i in `seq 1 20`
do
eval train$i
done

or

for i in 1 2 3 4
do
eval train$i
done

or

x=2
while [ $x -lt 20 ]
do
eval train$x
x=$((x + 2))
done





Tony Lawrence
Linux/Unix/Mac OS X Resources

http://aplawrence.com

 

[zeland]

for ((x=1;x<=10;x++)); do program trainx.txt; done


--== Anything can go wrong. It's just a matter of how far wrong it will go till people think its right. ==--

 

[LovecraftHP]

Thanks guys! Works perfectly now and saves me a lot of time. Thanks!

 

[stevexff]

My bash is a bit rusty, but I seem to remember you can do something like

for x in $(ls train*.txt); do program $x; done;

 

[stevexff]

Of course, if 'program' accepts multiple files on the command line (as many *nix programs do), then you only need to

program train*.txt

to have the shell expand the parameter list to include all the matching files...