[SOLVED] bash.iterate through same file names with different extensions

zaza1851983 · 05-31-2012, 09:27 AM

Hello

I have a set of files with similar pattern, like this:
file1.aaa
file1.bbb
then file2.aaa
file2.bbb, etc....

I'd like to iterate through these files using a for loop
so that $i holds *.aaa and $j holds *.bbb and

Code:

for ...;do myprogram $i $j;done

is this possible?
thnx

pixellany · 05-31-2012, 09:38 AM

Quote:

Originally Posted by zaza1851983

is this possible?

Yes...

But now, we need to clarify the question......

What happens in the loop?---specifically, do you access the files one at a time? Or perhaps--at each stage, you access all files with suffix "aaa" and then all with "bbb"

zaza1851983 · 05-31-2012, 10:22 AM

Quote:

Originally Posted by pixellany

What happens in the loop?---specifically, do you access the files one at a time? Or perhaps--at each stage, you access all files with suffix "aaa" and then all with "bbb"

inside the loop I call an executable and send $i $j as two parameters, where this executable will open and read these two files

so on each iteration following files are used: file1.aaa file1.bbb
next iteration: file2.aaa file2.bbb

regards

zaza1851983 · 05-31-2012, 01:09 PM

oh it struck me now. my logic is false

a good solution would be to iterate on all *.aaa files
and inside the loop, I'd just change the extension on each $i parameter to be .bbb
and so the problem could be solved

I guess that's it
many thanks

pan64 · 05-31-2012, 01:14 PM

something like this:

Code:

for i in *.aaa 
do
    yourprogram $i ${i%.*}.bbb
done

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zaza1851983 · 06-01-2012, 06:46 AM

oh great idea. that should work perfectly
thnx