just a file with thousands of filenames and I wanna get all files with the same extension, like .Z

for example....
users/123/a.Z
users/424234/fafa.Z
users/424234/asda.log
daa/dsss/222/efesa-01002-01:00-A.Z

how to solve this issue?

when you make..

grep .Z file >newfile
grep ".Z" file >newfile
grep '.Z' file >newfile

..it finds only all files with a 'Z' in its filename.

also grep -x (exact) isn't the correct solution, because 0 files.

thx for any advice....

grep "\.Z$" file > newfile

This indicates to match .Z followed by the end of the line.

Cheers
ZB

thx, working perfect....

^ - beginning
\ - ending of the line ?

what about the $ ?

^ - beginning of line
$ - end of line
\. - backslash escaped "." - to stop it being interpreted as a metacharacter - i.e. a literal full-stop.

Cheers
ZB

\ is to escape the dot (.). In regular expression, a dot matches any single character. Escaping it means to treat the metacharacter (i.e. the dot in this case) literally.

$ matches the end-of-line. So, if you don't want to match something like .Za .ZIP etc. don't forget to have the $ in.

thx..