Shell Programming and Scripting

In my script I need to loop around some files like below
example files are
fa.info.abcd
fa.info.bxde
fa.info.cdas
------

Code:

  
for test_data in fa.info.*
do
 # Some text appending logic applied 
 # Copy to another directory
done

Now I need to discard some files while looping around
for example if a files of below comes inside the loop i should avoid them and go to the next file
fa.info.ctye
fa.info.aicq
fa.info.auev
------
What logic/command is used to discard some files inside the loop !!
Thank You

Is this a homework assignment?

Code:

 
for test_data in fa.info.*
do
temp=`echo "$test_data"|grep -v 'abcd|bxde|cdas'`
#use temp variable instead of test_data
done

you got to replace 'abcd|bxde|cdas' with a logic which defines or recognize last 4 chars of your files then assign the result to another var (i used temp here). and use that variable then on.

Thank You Gaurav,

When i tried like below, I'm getting 'ac' as output . But my requirement is
'ac' should be avoided .

Code:

$ echo 'ac' |grep -v 'abc|ac'
ac

Please suggest me in this. This is not Home Work. This is my requirement

Thanks

Use the E flag so that grep can handle properly the pipe between the single quotes (logical 'OR') :

Code:

$ echo 'ac' |grep -vE 'abc|ac'
$

Thank You for the reply

I got an error when i tried the same .
I'm using KSH

Code:

$ echo 'ac' |grep -vE 'abc|ac'
grep: illegal option -- E

Thank you

Try egrep or grep -v "ab\?c"