Re^4: Regex lookahead, lookbehind

Hi choroba ... sorry for the confusion with the post. below is what I am doing.

foo_bar_foo10.1.1.1.foo10.1.1.1.txt
foo_bar_foo10.1.1.1.foo10.1.1.1.FOO-1.txt
foo_bar_foo10.1.1.1.foo10.1.1.1.test_FOO1.txt
foo_bar_foo10.1.1.1.foo10.1.1.1.test_FOO_abc_mon.txt
[download]

Above are the files which I need to query with regular expression. Out of which I need to pick only file2, file3, file4

and move them to some other directory. file1 should remain untouched.

Similarly sometime another set of files is as below

foo_foo_foo10.1.1.1.TEST.failed
foo_foo_foo10.1.1.1.test_FOO1.failed
[download]

Out of which I need to pick only file2 and move them to some other directory. file1 should remain untouched.

As of now I have separte regex to filter and picking the desired files with grep -v.

Thanks

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Re^5: Regex lookahead, lookbehind by choroba (Cardinal) on Feb 23, 2017 at 12:18 UTC
> Out of which I need to pick only file2, file3, file4 But why? Do you just want to skip the shortest name? If so, use length instead of a regex. Otherwise, try to explain how you select the files to stay or move. ($q=q:Sq=~/;[c](.)(.)/;chr(-\|\|-\|5+lengthSq)`"S\|oS2"`map{chr \|+ord }map{substrSq`S_+\|`\|}3E\|-\|`7**2-3:)=~y+S\|`+$1,++print+eval$q,q,a, [download]	[reply] [d/l]